Freezing is understandable, I’d only recommend a site after it had survived my own awkward tests. A barista I chat with in Exeter, who plays on her days off, said
https://kassa-bet.net/ was the newcomer she’d tell friends about, so I put it through a month of ordinary evenings. Withdrawals arrived the next working day, the lobby never changed layout overnight, and a bonus question to support got a real answer within a quarter of an hour. Two other new sites I tried that autumn quietly changed their terms halfway through, which is why I dropped them. A recommendation should rest on weeks of use, not a good first night. Tell him to start small and judge it himself.