I don't mean scammed in the true sense - as I hope websites are not outright scamming! - but have you ever had say a large balance in a GPT site ready to cash out and then it just disappears or loses it's value? For me, I was using Swagbucks to complete an offer that required me to achieve a level in a game by a certain time. In order to ensure I reached it, I pumped some money into it because I was going to make some good profit anyway (Spend £10, get £40 so a nice £30 profit). So I did all that, achieved my level and I was sitting back, waiting for my money to arrive.
Of course, it never did and I had to raise literal hell across multiple support tickets to get what I was owed. In the end I did, but it was only as a "gesture of goodwill" and not because I actually did what they wanted, which I did. That's the closest I've been to losing out thus far, thankfully most sites have been honest!
the only scam I took was from bots on the telegram, airdrops to be exact that promised some money for nothing. otherwise I didn't get much scam from the sites, I just went to the safe and on recommendations.