the artwork is lovely and its a unique interpretation of "loop", I just wish there was more to play, i reached max level on all the uupgrades on the second day and nothing changed with gameplay. if the goal was to make it more like balatro then some random upgrades or cascading numbers could work great with the multiply mechanic.
eg: increase the multiplier score by 1.25 for every card in the chain instead of thhe normal 1
or: your 2 diamond cards score more if there are no 5 diamond cards in the chain
or: add a gold card to your deck, every gold card in the sequence multiplies the score.
you want to play with your existing mechanic and encourage players to experiment with things that make the game different to play, look at GMTK's wordplay for example. challenge me to use my skill to score more but at a higher risk of losing more. he doesnt do it, but balatro really likes scaling those numbers and making their players feel like they've broken the game. I feel like you really have something here, just have to dive into it. you got this! looking forward to seeing where this goes.