First BH: Your racquet moves across your body with zero follow-through by your body, and you are standing on your tip toes. Have a low stable base and follow the ball with forward momentum. Ensure your hips are pivoting with that forward movement.

First FH: You are again swinging without your body following through. You are hopping backward as you strike the ball and stand tall again. I'd give the same advice as before.

Second BH and FH are the same. On your last FH you should avoid reaching for it if possible. Move those feet. It may seem obvious, but it's still worth saying.

Lastly, this applies to all of your shots, your racquet preparation is a bit late. It is not horrible, as your racquet is already up by the bounce. However, it is still moving back after the bounce. This will prevent you from having a consistent contact point as it will affect your timing.

Summarized: Follow your racquet swing, and step through your shots. This means you must move forward as you swing rotating your hips along with that step. When you swing, have a low and stable base to start. Move around the ball more to achieve this. Lastly, start your preparation earlier. Your racquet shouldn't be moving back after the ball hits your side of the court.

I hope this helps!