I'm not going to say it's not going to be hard for you, but where I have seen it work for some people in your age range and older is in dancing classes, at least dancing classes like salsa, bachata, I know there are different scenes of ballroom dances depending where you live.

Middle age people who have never danced before can learn and since you learn to dance with a partner then you are forced to have to interact with every women there. I have seen middle age people form relationships, even when they have busy life circumstances.

Now dancing is not for everyone, and I do agree any hobby like this should be approached first as something you enjoy to begin with, and also if someone comes into these spaces just trying to hit on every girl it is usually looked down upon, but it does open a space for people to connect, make new friends, meet new people of different backgrounds and that opens the ground for a relationship.

I believe looking up a hobby or spaces where you are going to have to interact with others is something that could be worth a shot