you probably think I am stupid.

Oh dear. I’m sorry you’re so upset. I too am a knitter and asked my daughter for a set of crochet hooks etc for my birthday - I was really looking forward to having a go. But I think my hands are just geared up for knitting, and I just can’t do it, no matter how hard I try. I don’t really understand why blankets are babyish. I would love to be able to do even that! I think that maybe the crochet is the straw that broke the camels back. Maybe you’re having a hard time at the moment with other things too. That good cry may help. Sending kind thoughts.

I'm stupid too then. I've tried hard to learn how to crochet and just can't do it. Don't beat yourself up. Just do what you can do. Best wishes to you.

Don't get hung up on what you can't do... I'd love to be able to Iceskate but I can't, I can ski though!

Focus on what you can do...

Oh dear, you are in a pickle! Any of us who do crafts find that some 'simple' things elude us!
I can crochet, and cannot knit! But there is one magic thing about crochet - it is much easier to undo! And 'granny squares' are just one part of crochet - I don't do them often.
Also, the nature of crochet is that basic rows can look beautiful depending on the yarn. I have a fantastic 'hitchhiker' scarf that is simply rows of double crochet, but made in a handspun silk / linen yarn, hand-dyed and it looks wonderful.

My aunt is in her 80s, and like you, began to find knitting difficult. When she began crochet (at my suggestion) she was all over the place - but as Tuaim says, the penny dropped - and she now makes lovely things for us.
Now, what you probably don't need is more suggestions, but I have some, which you can ignore if you like.
1. Make dishcloths to begin (just as we did as children!). Those that aren't up to much, use at home, but if you get a few nice colours to edge the basic ones, they can make a nice gift. My aunt turned up at a party with a basket with about a dozen in, rolled up and tied with a scap of matching cotton, they were lovely little gifts.
2. What's wrong with a lovely blanket / throw? One of my friends got a selection of colours (same yarn) and did a row every evening, selecting the colours depending on the weather.

I hope you enjoy your holiday - sounds like you could do with a break - and that maybe your fingers will find their way to doing something that satisfies you - which may or may not be granny squares!

Check out Bella Coco or Ophelia Talks and keep stopping and starting the video. It really doesn't matter if you square is not a square to start off with. Just keep practising and, believe me, the penny will drop and you will gain confidence. Some people are naturally very neat and get the tension right first time and these are the ones you see on FB with fabulous blankets they got right first time. Many of us have struggled for ages to get that tension right but it does come eventually. Good luck!

I'd say forget about granny squares for now and try a scarf or shawl - anything with straight rows as others have suggested. Not babyish at all!

poppysmum you are not 'stupid', wish that I could come and show you how to make a granny square. I don't start with a 'magic ring' I chain ten and join.

You certainly don’t sound stupid, in fact what a wonderful thing to have a yarn and craft shop. I can spend hours in them just looking at all the different and lovely things. I do buy something as well!
I don’t think friends or family are helpful when trying to get to grips with difficult concepts. Strangers are often better at explaining and teaching because they have no personal expectations of you. Do you have a yarn bombing group near you or Knit and Natter group. If so a kind member might take you under their wing and teach you.

Well I'm stupid too then My granny squares are abysmal, very rarely square . I've followed every YouTube video there is I think.

There are a few different ways of doing magic rings too. Have you tried doing it in different ways? I find it also depends on the yarn: some are easier to crochet with than others.

It's wrong to think that all the nice things are made by starting with a magic circle - I made a beautiful scarf for MrA that I would gladly wear myself, made myself some gloves, and a couple of cushion covers in gorgeous yarns. Knitting a square takes some practice, and a few tricks, as the sides tend to go in and out if you're not careful so it's definitely not 'babyish'.

Don't despair! A friend of mine spent time struggling to get started with crochet, especially the magic ring thing. When I learnt to crochet there was no mention of magic rings!

Instead of battling with the not-so-magic ring, could you make a short chain and join it together to make a circle to start you off? What's more, don't let other people tell you that what you've done is wrong - don't show them! You'll know when you've gone wrong and will be able to work out what to do by trial and error.

Straight rows to make a blanket aren't babyish, I hope - I'm currently making a blanket that way. Each row takes ages because of the size and my fingers are aching by the time I get to the end!

You're not stupid. Don't give up. Good luck.

I’m sure you are not “ stupid” at all. You sound very talented and have the skills and ability to run your own shop.
For some reason your self esteem seems very low at the minute and you are being very hard on yourself. Maybe this is about something else?
I’d just accept that crochet is not for you and do some knitting or sewing instead.
If you need a challenge, take up a new craft.