Hey, awesome that you made it this far. I've only done it once. It gets easier later on because the obstacles appear less frequently. I tried to fix the glitch and also created a double wall. Unfortunately, I don't know what else I can do; I'm not that good at programming. Thank you for the hint
maybe instead of making the player faster and faster over time, make the obstacles get faster, spawn more frequently, and in some levels make the player faster (as in unity objects too fast = clip everything lol)