I am somewhat in a similar boat. I have like one to two friends left and also looking for a partner. I never go out and only stay at home.
I know that this is definitely not for everyone but rather for a small minority, but I found and joined the furry fandom. They are loving and welcoming and so put my hopes into them. There is a high chance that there is a local meetup in your area but I have been too shy to attend yet. Instead, I opted straight for a convention which I think is a better starting point for me because it is more anonymous. Note, that this is just a suggestion since the convention did not happen yet and I am looking forward to it patiently.
Such a bummer :( I really do hope that something finally works out for you!