One has opened up near me i have just heard - might check it out.
I do some complex Routines with dumbbells that i have heard are similar to Crossfit - what’s different is the Rest between sessions and the duration of the Sets/session, and not letting people do it if they are not ready physically for it - form, technique, r.o.m. ect
I get Meat-head paying clients who want Results - but they assume super hard works like you listed that leave you shattered is the way to go. I spend more time Convincing these people Less is More than with anybody. Once results start to be shown, then the conversations become less and less.