I was in Cancun in February - had some luck with this site:
https://mx.mileroticos.com/
If you don't already have WhatsApp, download it and it is semi-Tender like format but my buddy was able to reach out to 6 or 7 girls got contact back, booked his first choice. I had not downloaded the app before and poor cell service where we were so it took me 2 hours to get first contact but first choice was at my hotel an hour later - slim, petite, cute, no tats, probably 22 YO (she claimed to be 18).
Good hunting.