I had a friend that was obsessed with it, he used to go on and on about it whenever we met up, I couldn't keep up with all the characters, but occasionally I'd think "ah that's interesting".
WWE is a mix of theatrical fighting and character. Lucha Underground is a hotpot variety of character. If you want to see bloody wrestling fights go watch some Deathmatch.
Your bound to see people getting their bodies fucked up in that fucking realm of wrestling.
If I want to see actual bloody wrestling fights I could always go downtown at 2 am to watch homeless people Duke it out for a spot under the bridge. I watch wrestling for the theatrics.
Japan also does a lot of deathmatches. It was pretty big in the 90s with promoters such as AJW. Although I hardly see any deathmatches about them lately or because I strayed on wrestling for a while. That I don't see some. Also the fact that the Japanese Love strong style wrestling.