What I've found to be helpful is to talk about your character's past, their lives outside of wrestling and everyone in it. Shifting your focus onto that can give you more creative freedom to write in detail and about - practically - whatever you want. Roleplays don't always have to be about your next match and trash talking, because while it helps, it limits you on what you can write. As a personal example, I'd point to my RPs for my X-Treme Title match. Most of them purely focused on Smoke's backstory and I ended up winning the match, even though they didn't really promote much and instead relied on the story moulded by the situations.

The way I see it, RPs are stories, and each one adds a chapter into your character's overall story and persona. Diving into their roots and exploring why and how they became who they are today opens up a world of opportunities to what you can expand upon in future roleplays. For instance, I'm already somewhat mentally planning for some roleplays in about a month or two, based on the story that I've created for Smoke Man thus far and using the material as a base to jump off of.

Long story short, talk about something other than strictly wrestling (for example, life before or even backstory) in sufficient detail during RPs and your quality should improve, since you'll instead be writing about your own story, rather than talking smack all the time. It worked for me, at least