How to enjoy summer when alone?

I really want to have fun and do stuff in summer for once. I'm not really able to hang out with any of my friends (or more like acquaintances?). The isolation is kinda getting to me and I wanna know what I can do despite that. I live out of town and my parents won't be able to take me anywhere too often, so I can probably only do stuff at home, and if I do do something (like go to a mall or whatever) it'll be either alone or with my mom or dad. (Tbh I'd kinda rather be alone. Is that bad?)

What can I do to save me from boredom? I mean, I've got stuff like art, a garden, anime, games, ect... but it doesn't really help so much at this point. what can I do that will really take up my time?