Hey! Ok so I think with equipment it’s important to have as little change as possible and really be comfortable with what you are playing with. Pimples are a bit more limited though in a few ways and having inverted rubber gives you much more chance to spin and create variety in your game. Your backhand looks good and compact as you said I think you should stick with the inverted and work on keeping the ball low when you spin up and also going through the ball forward a bit more.
If you are playing that amount each week with that level of player you will definitely improve, it’s just about working on certain areas of you game and focusing on where you lose points and also maximizing your strengths to. I would say the main things are movement and getting into position for each shot to keep on the attack and also after your spin u[p shot being able to follow up with a strong spin again. You have good technique and I can see everything is there, it’s just about working on these details and being able to do it consistently but I would stick with the style and equipment set up you have and work on building this all round attacking spin game.
Dan 🙂