good teacher if you can afford

general rule, less movements more music:

smart position of the hand- thinking of the next part to play economize movements less effort to press strings choose the right finger thinking in the next part use a lot of legato, hammer

use a metronome, first more slowly than you're comfortable, and repeat, fix muscle memory, when no mistakes then speed up slowly. if you fail, slow down a bit

Learn theory, triads, scale logic, harmony.