It’s always recommended to book your tours through reputable companies. Be careful of booking tours through companies not listed on any website such as Viator, Trip Advisor or Tour Radar or Get Your Guide, etc. It’s not recommended to book tours through street vendors.
Also booking a tour through the hotel you are staying at is a fabulous option. You know the tour guide will be safe and reputable.
Remember, safety is key when traveling through Mexico with your loved ones.