Upvoted. But finding a block as a solo miner is so rare that if they just took peoples money and not mined with it, nobody would probably notice.

And here is a better link imo https://www.nicehash.com/solo-mining

It's basically very similar to playing in a casino, you buy hashing power from nicehash and you solo mine with it, all packaged for you in an easy to use interface.

After a specific amount of time you either lost it all or you mined a block, which pays the reward.