I've been trying to learn songs on keyboard but only the right hand because I suck at this and I am struggling on the finger acrobatics you have to do to play the super-far-apart notes. Do you have tips for this,
yes. as long as you mean what you say (mean what you play) while you are playing it, your physical hands will have 20x more skill. to start building up an intuition of what everything means, just start as small as you have to. start with 1 note. sit around all afternoon pressing that note until you figure out how to use it meaningfully. and work your way up from there. the physics will learn itself over time, as long as you mean what you play. just how your lips and mouth learned the 1000s of different positions you use in probably every sentence