anyone else bored with their life?

So I just has a mild existential crisis and I realised that my life is in fact way too repetitive and boring and I have so many ambitions and great ideas for my life but none of them are happening.

Like if someone asked me what I do in my free time I would have three things to say; watch tv, listen to music, read a book. That is when I'm not doing something with friends. But why don't I have any cool hobbies?

I once loved playing guitar and piano and I got really good but then it got boring so I forgot about that, and I got bored with video games and boardgames and YouTube and baking and like 10 different sports.

I have this weird paranoia that my brain is going to be underdeveloped because I spent my teenage years not doing a wide range of things, like I read something that says learning instruments makes a certain area of your brain smarter. I don't know but what I do know is that my week is so monotonous it's like school -> gym -> home -> shower -> music + homework -> movie -> bed AND IM SO BORED ALL THE TIME