I'm about twice your age (maybe a little older) and I think the thing I wish I'd paid more attention to when I was younger is this:

Don't be penny wise and pound foolish.

This means: don't waste time earning a few sats through a sats for steps app or mobile game with pitiful rewards. If you want stack sats, figure out how to get paid fiat and dump it into bitcoin whenever you can.

All the time you spend on those smaller things could probably be better spent just getting paid the normal way to do whatever. It's easy to lose track of priorities with some of this stuff. You can end up spending a couple hours on mobile games earning 1000 sats or something. Spend that time at a job or learning a new skill and you will be ale to stack more sats.

It's cool you are thinking about this kind of stuff. That alone is a pretty good start.