I was considering a belt for when I attempt a 200kg 1rm. That would be quite a milestone for me that I want to try when I think I can get it.
What's the point in using it for one off lifts? You'll be so unfamiliar with it it'll probably be more of a hindrance than help.
Focus on building a strong functional core. Forget about a belt in the short term. I'm not against them at all but it grinds my gears that 90% of the people that wear them don't use them properly at all.
Did you send that to a sloot?
Can confirm, received.