oh lol. Is cool to see someone who still have this enjoyment of someone playing their games lol. Is sad that I didn't had the same luck, and no one plays my games...
Enough of self promoting, one thing I noticed is that apparently you added post procesing to the game. Good, post processing is a very good way to make your games look good, but when a single screenshot of your game has vivid red, yellow, green and blue... Maybe the way you're using colors is wrong. There is a video by brackeys (that one guy who's pretty much the mentor of every beginner game developer lol) about color palletes, you should check it out.
Also, you said about levels. Yeah, as you're making this game in unity, scenes. You can just right click the assets tab > create > new scene. Then go to the build settings, and drag your scene into the scenes to build tab (if you forget this you will have a couple of unity errors lol). Then just make function that loads a string (reminder that button functions only can have one parameter and must be public), put this function as the action of the button, and put the name of the scene into the string (if you didn't undertood nothing, you can go to a tutorial about buttons in yputube, and chatgpt always exists)
For the endless game, one thing I noticed is that there kinda isn't obstacles enough, you can see all obstacles pretty fast, and for long playthroughs, this may be bad. Add more obstacles
btw...
