Allison,

For a beginner, all of your lifts look really good!
Let’s look at them one at a time.
Squat;
Looks ok.
I like to fix one thing at a time, so let’s do this, slow it down and do each rep with purpose. This goes for all main exercises too.
Treat each set as a group of singles. Every rep gets a sold reset of the root, brace and whatever else needs to be done for the specific lift.
You can see that as the set goes once you fatigue (normal) and your form gets looser.
Simply treating each rep as a singe will clean this up.

Bench:
Firs off, let’s get some collars on the bar please so you don’t get hurt.
Second, I’d like to see you fix your foot position and hip height.
You can see that you get set up and your butt is off the bench then you put it down before you press.
On a heavy attempt, your butt will most likely come up. We prefer you to set the hips up as far aqs you can without the butt being off the bench at the start.

Deadlift:
Overall, very good!!!
But, one small thing.
Make your arms longer before each rep.

This is explained in the Deadlift courses.

Let me know if this helps and keep posting.