I watched pretty much a lot of detailing content year ago, started with interior and decided to polish my F02 myself. Bought Rupes Mark lll, honestly didn't want to invest too much in chemicals that would just sit on the shelf and expire. I can't recall which YouTuber recommended it, but I got a detailing kit from
https://getundrdog.com/. Results appeared to be great honestly, I even applied coating in my shower and still using their towels at home. I see they got some new stuff, so next summer will try it on my father's car too.