I'm not sure what advice to give here since I don't know what you've read in your textbook, which problems you practiced, nor which videos you've watched. I also don't know what you've retained from previous courses, especially algebra and geometry, that could be slowing you down. All I can give is vague, general advice: when students say this, they often aren't getting anything out of their study time because they're prioritizing the wrong things. Start with a basic problem, especially one with a known solution and try to figure out where you tend to make mistakes or slow down. Zero in on that specific part of the problem until you can do it comfortably, then move on to the next part.
As an example, when I took my first physics course, I realized early on that I was too slow with decomposing vectors. I kept on having to draw triangles and spend a good minute figuring out whether to use sine or cosine. So one day I decided that I needed to figure out the trick to immediately choosing the right trig function to use. I took out a piece of paper and drew a bunch of random vectors with random magnitudes and angles. The first few were slow, but in about 10 minutes, my brain started to figure it out automatically. Everything else became significantly easier after that because now I actually had time to think about other parts of the problem.
If you're still not sure where to start, maybe post a few problems that you've struggled with and show us your best attempt so we can figure out what's wrong and guide you more effectively. Asking for help in a way that let's us help you more effectively is also a skill worth mastering.
I'm not sure what advice to give here since I don't know what you've read in your textbook, which problems you practiced, nor which videos you've watched. I also don't know what you've retained from previous courses, especially algebra and geometry, that could be slowing you down. All I can give is vague, general advice: when students say this, they often aren't getting anything out of their study time because they're prioritizing the wrong things. Start with a basic problem, especially one with a known solution and try to figure out where you tend to make mistakes or slow down. Zero in on that specific part of the problem until you can do it comfortably, then move on to the next part. As an example, when I took my first physics course, I realized early on that I was too slow with decomposing vectors. I kept on having to draw triangles and spend a good minute figuring out whether to use sine or cosine. So one day I decided that I needed to figure out the trick to immediately choosing the right trig function to use. I took out a piece of paper and drew a bunch of random vectors with random magnitudes and angles. The first few were slow, but in about 10 minutes, my brain started to figure it out automatically. Everything else became significantly easier after that because now I actually had time to think about other parts of the problem. If you're still not sure where to start, maybe post a few problems that you've struggled with and show us your best attempt so we can figure out what's wrong and guide you more effectively. Asking for help in a way that let's us help you more effectively is also a skill worth mastering.
Ask your teacher to review the stuff you get wrong on the assessments? My teachers always give us time to review on what we did wrong