Hi kassas!
Because nobody had replied yet with a good answer to your question I made a simple google search with your question and a few results came up that might be interesting
Google.com/search?q=youtube+channel+or+anything+where+fights+and+fighting+styles+are+analysedIf you find any of the ones shown to be good and what you where looking for, please let us know! It's always interesting with some tips and/or reviews of stuff like this.