Duplicate Videos and Monetization

Ok so I got this Youtube channel with a decent following but lately many of the videos I've uploaded quickly get rejected for monetization.
I'm guessing this is because I wasn't the first one to upload them.(Didn't stop me from monetizing before though!)

So any tips that won't get my Youtube account banned or disable my monetization? I've heard of changing the MD5 Hash or whatever or editing the video and changing the pitch? I'd like to know what you guys would recommend I do and which programs to use.

I'd also like to add that I'm pretty sure I could get away with bypassing Youtube's content ID system. The videos I upload aren't Beyonce music videos or Movie trailers. What I upload is very very niche and I've made thousands over the years. I'd like to make tens of thousands.

Even if you are rejected for monetization on a video, Youtube most likely won't ban your account unless its on a consistent basis. And yes there is tricks to manipulate the audio/video slightly in order to bypass their copyright detection, however Youtube has been really improving their detection in the last few years. Good luck!

If you video has music or sound it's going to get reviewed you can try muting it and adding subtitles instead