I’m a PT and work with loads of women in a similar position to you. Your workout sounds pretty good for a beginner level. Warm up is great. Leg press/chest press/shoulder press are all good basic exercises. I would swap the ab crunch machine for planks and side planks, as they target your deeper core muscles and give you a better all round core workout, whereas the machine will just be working your upper abs. Don’t forget to stretch at the end!!!
It’s not completely optimal, but that’s ok because you’re just starting out and the most important thing is feeling confident in the gym, choosing a workout that you are comfortable with, and completing those moves with good form. The good thing about the machines is that they are generally pretty easy to do ‘right’, whereas free weight exercises tend to need more specific technique.
But that’s something that you can build in as you get used to your routine. If you want to add to what you are doing/change some exercises down the line, I would look at progressing from the leg press to a barbell squat. I would also look at adding in Romanian Deadlifts, as they are a big compound hinge movement. However these are trickier to master with good form, so go on YouTube and search up reputable form videos (I like the men’s health magazine ones, and they are usually spot on), to help you get the technique. There’s also a guy on Instagram called grantlofty who posts some excellent videos refining technique with great tips and cues.
Just remember to always be working to increase the weight you are lifting. Your last set should be really, really hard. Your last rep shouldn’t look as nice as your first rep. If it does, you can go heavier. Every time you go, try and add a little bit more weight, even it’s just for a few reps at the end. Then next time, do that weight again. Before you know it you’ll be bossing it!
It’s great that you’ve made the first step, and two times a week is very good for general fitness and strength. I think most of us are training for the same thing, and it’s not to be a powerlifter or an athlete, it’s to strengthen our normal bodies and age as well as we possibly can, so don’t get too sucked in to over complicating things! Good luck 💪💪💪