The introduction of 1/16th notes can indeed be challenging, especially when combined with specific fingerings. It's important to prioritize accuracy and comfort over speed when learning a new piece geometry dash bloodbath. By taking your time and playing at a tempo that suits your hands, you're allowing yourself to build a solid foundation and develop good technique.
Small hint - I would try and make the LH crotchets (which aren't scalic e.g. bars 3 & 4) a little more detached so that the whole song isn't almost entirely legato. Also, and I might be slightly wrong, but I would have started the mordent in bar 7 on the B... e.g. playing: B A BABA G | G