Um, can someone please explain sweepstakes games for real money to me like I’m five? 😅 I feel so lost!

It all started after reading that best sweepstakes casinos forum thread here, which was super useful, but yea…. Maybe I’m not the brightest, but I signed up for this sweep coin casino (I think it was Pulsz?) and now I have “gold coins” and “sweeps coins” and I’m not sure what’s what. Are they both fake money? Can I win real cash? Do I need to buy more to play?

I played a few slot games but honestly have no clue if I’m making progress or just wasting time. Is there a strategy to this or is it pure luck?
Sorry for all the questions, but I’m genuinely confused and don’t want to mess up. Any advice would be super appreciated! Thanks in advance! 🙏