guitars

Since there are already proper answers, this is more general advice than a solution to your particular problem, but it should be helpful.

As a beginner, what helped me the most was developing muscle memory, which is what allows people to play even with their eyes closed.

I repeated a few simple exercises every day for at least 20 minutes with a metronome app. Start slow, then slowly raise the tempo once you get 3 "perfect" repetitions in a row. Repeating the same stuff over and over can be boring, but if you do it with discipline you'll get better, even if you don't realize it yet.

Pay attention to your mistakes. If it sounds bad, find the reason why, look up the proper technique and try to copy it. Keep your hands relaxed (avoid tenseness).

Any sequence of notes can be played as an exercise, so you can just pick a riff from any song you like and play it slowly until you master it.

Or you can also do generic exercises like going 1234321 on a single string, then going up or down the fretboard to get used to the distance between frets. Then repeat the same, but switching strings after each repetition, to coordinate the vertical movement on both hands at the same time. The spider exercise helps a lot too, as well as skipping strings.