my pleasure ! music composition is hard because it's a whole different way of expression than programmation or even visual arts, so it's kinda hard when you begin, I've been learning (mostly by practicing, I've learned just a little bit of music theory) for like 2-3 years now and I still can't always do what I set my mind to, for example say I want to make a happy song, I don't always succeed in making something that sounds happy ahah but once you start and if you enjoy it, you'll have a great time and the learning curve is nice ! And then you get to enjoy your own music so that's nice.
For sound effects, I just started like a month and a half ago for our very first game jam and it was really fun, you get to think of everything around you in a different way ! Like, we had a conveyor belt in our first game (mirror mirror) and it was tricky to think of something that would make the sound of that, but I ended up using an old school coffee grinder and it works fine I think lol
those 2 are really different in some ways, even tho there are skills that can be used in both ! I still feel like i'm a beginner so I don't know if those advices are really great but that's what I think ! (Also imposter syndrome is a bitch ahah)