Hi Gamblingblows, I haven’t accumulated nearly as much gamble free time as you but reading through your post I feel counselling would be beneficial for you. It would give you time to work through issues which are holding you back, eg the mild depression you describe. There may be other blocks which you are currently unaware of .
You say you find it difficult to socialise but this is a skill which can be learned – you could start by buying a book and practicing some of the ideas there – most people have to learn how to socialise at some stage of their life and like other things some people are better than others at it but everyone can achieve a standard that allows them to meet people wits confidence.
Also some clubs are easier to socialise because everyone shares a common interest – it could be anything from a book club to a scrabble club.
You have done amazingly well on staying gamble free and you rightly should be proud of yourself. It is so encouraging to read a thread from someone who has so much gamble free time behind them.
Keep posting !