Rate My Workout

Hey guys,
Total beginner here (36F).
Just wondering if there's anyway I can improve my workout here? My goal is for general fitness and health (although dropping a size or two would be a bonus! Of course I know diet is the main factor in this)

Some physical issues I've noticed with me is bad posture (rounded shoulders and anterior pelvic tilt if I'm right) that I would like to fix

My intro gym guide suggested to focus on isolated exercises since there was a reduced risk of injury for a beginner, so I've focused on machine exercises

At the moment I'm only able to go to the gym once a week hence the full body workout, although I'm hoping to go twice a week in the near future!

(In general, starting at 5 reps of 3 sets, increasing reps when doable, until 10 reps then increasing load and resetting to 5 reps, repeat)

Warmup 5min stairs (I also walk 20 mins to the gym is that's relevant)
Assisted Pullup
Assisted Chest Dip
Lat Pulldown
Seated Row
Shoulder Press
Leg Press (this was the most difficult but want to improve the most)
Squat Machine
Chest Press
Hack Squat

I just want to make sure I'm not missing anything or doing redundant exercises, so any feedback would be greatly appreciated!