There is a lot of material out there, but all of it is useless without action. "Game" isn't something you read in a book, it's something that happens overtime as you build momentum / success with women.
Those books tell you that looks don't matter, that's all bullshit, obviously women prefer men that are tall, good looking with big dicks.
However, what is true is that women DO place WAY less importance in appearances than we do in women.
You need to learn the basics of how to successfully interact with women then just put yourself out there. Approach women on a daily basis with the right knowledge, if you keep doing it you will get better at interacting with women, PERIOD.
You also need to change your beliefs, if you aren't comfortable in your own skin your slump will continue. The self deprecating shit about how ugly you are is a like drug, a self perpetuating cycle , drop it.