I understand that sports betting is technically illegal in some states at the moment. I also know that people use sports betting apps to place bets. I have questions. I'm hoping someone in the know can share some ideas. I want to place a bet. I'm not saying anything serious, but I just thought it would be fun to put a few bucks on games.
Are there any restrictions on using betting apps and what is the best app to use?

Sports betting is allowed in some places, and not in others. But many people use legal platforms that operate in approved states. There are plenty of apps, but I would take a look at https://onjabet.com/en . The site is in English, the interface is clear even for a beginner, you can quickly register and not bother with a bunch of verifications. There are sections on different sports, normal odds. You can make live bets, there are statistics for analysis if you want to go deeper.