Gonna take this as a jumping off point to mention some software.

Wanna get into video editing? Shotcut’s pretty solid in my experience.
Into mind-mapping stuff? You might give Freeplane a look.
Have a drawing tablet & want to use it to take handwritten digital notes? Check out Xournal++.
Cross-platform Notepad++ alternative? Might give CudaText a try.

Could list off more but will leave it at a few for now.