Artists struggle with hands for years. Getting better at hard things is supposed to take a while.

Difficulty that lasts years is normal rather than diagnostic. Some parts of a craft are genuinely harder than the rest, and everybody who does it well spent a long stretch doing that part badly, repeatedly, on purpose. Reading your own slow progress on the hard bit as proof of missing talent gets the order backwards.

Take the one element you keep avoiding and build something small and regular around it: ten minutes, four times a week, on hands or scales or whatever you skip. Keep the attempts instead of binning them. Judge a month’s worth at once rather than today’s.