If I'm right in thinking for the death one he wants it to just not have a death animation, that's easy, but it's hard to tell with his spelling an sentence structure, but I hate fabric, so I won't do it
while you can't use the java edition on Microsoft Edge
Please elaborate, do you mean you can't get it on the microsoft store? Because edge is a browser, not a launcher or engine. And if you're looking for mods, java is the way to go, alongside community-driven servers, and consistent updates, it's better in every way. The only reason to get Bedrock over java is because bedrock is cross-platform allowing xbox, mobile, and pc to play together.
Cheating in modded is much easier, because they can just download a mod meant for cheating, hence why anti-cheats need to be client-side. If you want checks against the normal stuff, find a plugin, not a mod