I must say, i've been a cuck for 30+ years, an ex wife that cucked me, an x fiance who cucked me and my current wife who cucks me... and the one thing that almost always had these three women want to drop out of the lifestyle, was being stood up, or bullshitted to online before meet ups etc.
Was never skin colour, cock size, or how good they were in bed... those never really mattered, but I have lost count of the times over 25 years, of my partners, spending days getting ready, buying outfits, heels, pussy waxed, booked restaurants, hotel rooms etc. only to be stood up at the last minute. That was nearly always the reason they lost interest in the lifestyle and wondered if it was worth the effort.
Just be as picky as you like and weed them out, once you find a good one or two, then just go for it