There are so many people on their own here, and so many opportunities to help in charity shops, join the knitting group, join the Fethiye friends group, honestly, you wouldn't be alone for long.
I don't know how old you are, but I do know people who have moved in their 70's and even 80's, so it never too old.
Don't have regrets and what if's, do it...!
People here are lovely, you would have lots of support and friendship.