Okay, I've been researching this myself. Finding a reliable platform with good rates for exchange USDT Tether to Visa/Mastercard EUR can be tricky. There are a lot of sketchy sites out there. Based on my experience and some online reviews, I'd suggest checking out this resource
https://nimlab.eu/exchange/usdt-tether- ... card-euro/ . I've found it to offer relatively competitive rates and a decent level of security. Do your own due diligence, of course, but it might be a good starting point.