How To Clean Gameboy Advance Cartridge [Fix No Boot]

So I've decided to try something new as a hobby - taking non-working and old gaming consoles/games and fixing/repairing them. In this video I have some Gameboy Advance games that are not being read by the gameboy advance, so I take some Isopropyl rubbing alcohol and a cotton bud and give them a clean! This is one possible issue for a game cartridge not working, there are more! Please, if you're reading this, leave some comments whether you liked the video or if there are any tips/advice you can give! Thanks! More to come soon :)