Do any of you maintain hobbies?

I've just graduated college and, as horrible as senior year is, I'm TRULY losing my mind without anything to do. Aside from submitting applications, I'm doing nothing all day and it's wrecking my mental health.

I need to get into a hobby. The problem is I can't stick with anything. I've tried to consistently do things I like, like play guitar, exercise, code games, etcetera dozens of times and nothing sticks. I don't want to waste the effort trying again. I'm on social media and I play too many video games, but those are ultimately making me more depressed.

ADHDers who have hobbies, how do you get into something and not lose all interest the next day or week?