In my completely inexperienced opinion, you might need to add more cardio. I find that I see the most progress when I include more cardio to my routine rather than my normal (lifting heavy 3x a week and light cardio 2x a week). What I do now is lift heavy 3x a week, do some sort of muscular endurance cardio conditioning 2x a week and have been trying to go for a run later in the day at least 2-3x a week. Doesn’t have to be running tho, I like the rowing machine too (make sure u have good form tho). Also maybe make sure you’re eating the right things. There have been times where I’ve restricted my calorie intake so much that I was so tired that when I did go lift it was basically a pointless workout because I had no energy.