I use Binance, you can use your card there, fees are like 4%. I prefer USDT because there is volatility/exchange rate risk with non-stablecoins but you may not have a choice depending on the seller. If you want to avoid the 4% fee do a SEPA transfer.
I use Trust Wallet. Is it perfectly safe? No, but for payments its good enough.
I use Binance, you can use your card there, fees are like 4%. I prefer USDT because there is volatility/exchange rate risk with non-stablecoins but you may not have a choice depending on the seller. If you want to avoid the 4% fee do a SEPA transfer.
I use Trust Wallet. Is it perfectly safe? No, but for payments its good enough.