There are a ton of good ideas here so I won't go over any of them......

But I will bring up something you said you didn't want to do.

Go to gym. Not to use similar equipment that you already have by yourself, but for exercise classes. There will be a trained coach who will have you do stuff so you don't have to come up with your own workout routine. You will meet new friends (go at the same time everyday). You will feel obligated to show up at a specific time on specific days. You might learn new things (depending on what classes you go to).

There is a whole host of reasons to do this. I totally understand not wanting to do it because of money, but if you show up it is worth every penny.

Cycling class Orange Theory Crossfit Yoga Jazzercise (does this still exist?) YMCA classes Etc....