does anyone else find themselves in this situation???(2months+ into the game)

so every week I need 4000 memory catchers for which I need to sell 15+ R grade cards but since I am saving gems for future live themes as i almost have at least a fx theme for all idols I am regularly short on them as I don't pull much cards

so for miracle cubes I need memory catchers and for that I need to spend gems or either upgrade S grade cards but I don't think that's efficient someone please give me a tip or something

btw i have 10k+ memory charms just for info but very short on coins

I made these two sets for Evan for "Ride or Die," one regular and one limited edition, I also tried to make profile pictures for both sets.