Well my view of life is, to always begin by expecting everyone to be decent and honest . Woe betide anyone trying to con me as they will get short shrift. But I have lived in many countries and moved a lot, so as the newcomer you always have to find your way around anyway and make the effort.
So there have been the odd times when I have backed off , but at 81 , new friends have been an important and enriching part of my life. In fact I am reminded of meeting a lady in her 80's when I was about 40, walking along a promenade at the coast, when I had just moved to the area. She was very fit and interesting, a widow, who still drove and made the most of her life, and every week she used to take some of the "older ladies" shopping in her car ( she turned out to be the oldest in age of the lot) So we became great friends, saw a lot of each other, shared gardening and walking and many things, most of all neither of us cared a fig for fashion or shopping. Our idea of a great day out was to go to the dales or go swimming or rock pooling. We would wander along footpaths and climb over stiles, when she would jump down, but always say to me "dont tell Gay (her daughter) that I am doing this.
We remained good friends until she died, she was a wise and kind friend to me, and she also ,I know, appreciated joining my family for meals or trips out. She was very independant, but if there was a problem , my husband could check her car or the fuses etc. My son was at school at that time, and I am sure benefitted from her part in his life. So we moved back to Yorkshire, where life went on and I used to do 3 days a week hospital car volunteering, then drove the little white bus up Swaledale and met many other people of all ages some of whom have become lifelong friends.
Now I have come full circle as I am the old lady. I still drive, swim, volunteer and go to a womens group which is welcome to women of all ages and we have a huge range from someone with a little boy of 1 year old, to a proud great granny. We are there to support and help and enjoy each others company. Age is as they say a number. I would be hopeless if I was a witness of a crime and the police asked how old the person was. I could be very precise about what they wore, how they walked etc etc., but how old they were , no idea!. So go ahead, dont overthink it, but dont make "plans" as to who you meet. If you think back to your friends you made in school, you just liked someone and carried on. So my advice is to carry on with your interests and you never know who or what will happen. So if you swim, walk in the park, go for coffee in Cafe Nero , play tennis, sew or birdwatch, carry on and you will meet someone that you connect with in one or other way, and enjoy it.
If you want to take things carefully, as with all the GN posters etc., I feel I have many friends on here, but if there was an opportunity to meet up, I would suggest that you choose a cafe in a town for the first actual meeting. That way you will be safe, should there be any thing that worries you. Arrange to meet in the cafe, so if you are there first you can find a table and sit with your coffee, not stand outside in the rain etc. Then remember that the person you are meeting for the first time, will probably be slightly apprehensive too. So with a bit of luck you will "click" and can spend ages getting to know each other, then maybe going on from the cafe to see an art exhibition or whatever appeals at the time. If sadly, what seemed to be great on paper, doesnt actually work out and you dont see it going anywhere, you can just enjoy having the coffee, then thank them for coming, and go off.
On the safety level, I would not give my private address if I had met them online or something like swimming. Keep to public places for a couple of times and then proceed to the usual way of things. So looking for an older person that might be a possible new friend, I would say do you belong to WI or go to church, or a keen needlewoman or whatever, you could join a club that interests you, where age doesnt come into it, rather the mutual interest. So go ahead at the worst you will have wasted an hour having a coffee with someone you dont wish to meet again. At best you may be lucky as I was, and find a friend for life.
I have met many people on GN, who if I had the chance , would like to meet them. Having been on various posts for a long time I feel I know lots about their lives and admire their many brilliant skills and abilities. So if I travel to their areas on holiday , or know that someone is coming to my area, I will definitely ask if they would like to meet up at a cafe. They may not want to, or not have time, but I will never be sorry that I asked. What have you got to lose by asking? There is so much appalling trolling and horrible social media stuff which seems to be based on greed, and selfish attitudes and showing off what you have etc, that I am sorry that I think that there are people who think that everyone is like that , but there are many really pleasant people in the world too. Good luck and hope you find someone who will also be glad to meet you.