I've been cubing for around a year and I average around 35 seconds. I'm not improving at all. I can't seem to do cross fast, I'm Abysmal at f2l, I only know 2-look oll and know 6 pll algs, 2 of which I came up with and are very inefficient, I can't seem to improve. I use custom Gan356 Air UM and have relatively fast tps, but nothing seems to help. I've been feeling unmotivated to cube anymore because I feel like I'm at the very bottom and I can't get up any further. Should I quit?