WHERE WOULD YOU LIKE TO GO?
Final Cut Pro
FCPX is a great professional video editor that can take you all the way through a career! Don't believe me? These movies were edited in Final Cut Pro soo... I think you'll be alright with your YouTube videos
MUSIC & Sound
Envato Elements is great for getting some music or sound effects for your videos as well as having a huge library or stock video, graphic templates and more!
Soundstripe has some great music on its basic plan and can be upgraded to add sound effects and stock video
Streambeats is DMCA free music and is completely free! Made by content creators you can trust it is safe to use in your videos and live streams
Apple Motion while more complicated to learn plugs straight into FCPX and is a very powerful resource for making animations. This is an intermediate to pro-level tool