You can play real money slots at online casinos in the United States. There are thousands of slot games to choose from, all with different features and bonus rounds.
You just have to stick to legal, regulated online casino sites such as BetMGM, Caesars Palace Online Casino, FanDuel, Betway, bet365 and BetRivers. They offer great casino game ranges and they will pay out quickly and without any issues if you win.