What very good advice on here, Msida and I'm sorry that you're having such a hard time. I remember when you posted about losing your DH. My heart goes out to you.
There are possibly 3 quite important things which have been raised here - firstly you moved house! . Never a good idea until at least a year has passed following a bereavement. It takes a long time to gather your thoughts and to even think about life again and what you want, so you moved very prematurely - presumably because you were desperate to feel better. You now may feel worse and feel that you've made a mistake but, of course, you were really running from yourself and how you felt in such a tragic situation. We can all be wise with hindsight!
Hope that you haven't moved somewhere far away from where you lived - because a totally strange area would possibly make you feel even more isolated now. You say you didn't listen to some warning feelings you had - again because you just were desperate to feel better. Please don't give a lot of thought about moving again until you feel a great deal happier and can make helpful lists of your needs and dislikes, so that - should you move again one day - you are more likely to get it right.
Thirdly, it's such a good idea to tell yourself - and mean it - that where you are does not have to be permanent. In the months or years ahead, you will have the chance to move anywhere you want, to maybe live life differently. At present, you need to concentrate on making a comfortable home for yourself, getting to know your neighbours and the area and not push yourself into making decisions which you might regret or have a change of heart over very quickly. When you're in a happier mood, it might be an idea from time to time to think over any options that you feel you might have, but have no plan to do anything life-changing or drastic until you feel more sure of what you want.
Why not join some groups or clubs, even regularly walking with a group and being able to socialise with new people, a new routine, should make a difference to your outlook on life. Take your time, don't panic and each day - albeit slowly - you're bound to feel stronger and under less pressure, so that important decisions are more likely to be easier to make.
Good luck just trying to get back to some kind of normal now. Be kind to yourself and don't rush. Sending you best wishes for some happiness again soon. ?