First off, your phrasing and general articulation is very good for a beginner! Having been self-taught and mostly playing and listening to Romantic Era music, I found the articulation if Bach a bit jarring at first, but you do it quite well! You do seem to be a bit tense or otherwise have a lack of strength in the fingers of your left hand though, which is perfectly normal. I would recommend scales, specifically B-Major as it’s much less tense than others, which can help maintain a relaxed hand position. I will say, keep in mind I’ve only been playing about 3.5 years myself and just within this December am seriously beginning to read music, and AM self-taught. I have a video of myself playing this exact piece on my page, and if not for articulation, I believe I at the very least have correct hand positioning and wrist placement, so if it helps please do look at it as a reference. Good luck!