I have never wasted much time on demo games because demo games are just nothing compared to the real games. If I may ask, who here would admit that they have lost games very much in the demo games compared to the real games? I guess not much would say much about it. You play a different mode of demo games and also meet a totally strange mode of the real game.
Surprisingly, the demo games have way higher chances of winning, certainly not a coincidence, lol. Hypes you up for the real thing, only to end up disappointed that your expectations weren't met. I also don't play any games in Demo, but if I'm honest, I haven't seen them frequently, are they still a thing? Especially in games such as slots, they're pretty straightforward and aren't necessary, but even in other cases, I prefer to try the real thing, starting slow, with minor bets till I get the hang of it.