Bach Piece I'm working on

[ifiwereu]

[lelle]

Two things come to mind:

Your wrist looks rather high, I think you may be sitting too low. Try raising your chair a bit!

Overall, I'd slow down most of my practice quite a bit. If you divide the piece up into its component beats, you should know how to play each beat without mistakes. So everywhere you make a mistake, immediately stop and work on that spot until you can play it without issue. Do this for the whole piece and you'll have it in the bag.

I also see a couple of spots where you fingering seems awkward. 00:31-00:35 comes to mind. Slowing down and working out exactly what you wanna do in these spots to have a smooth fingering will help.

[carmelopaolucci]

I've to agree with what Lelle suggested. I recommend slowing everything down and studying it very, very slowly, with metronome don't rush to speed it up... Identify the various entrances of the subject you'll need to emphasize in the performance and choose how to play it... legato or staccato or appoggiato, etc. And repeat the same pattern every time it occurs on a different voice. It takes time, but if you have a little patience, you'll get really good results.
Best regards from Italy
Carmelo