How can I relearn how to play?

I’m looking for something that doesn’t cost money, and can be done alone or on the internet… I’ve tried Angry Birds, and online gaming… I’ve watched the ending to most of the games I used to play as an adult. I used to love swinging on a swing but I’m told only children are allowed to use the swings. So I am (SOL). Should I buy PlayStation 4 and put endless cash in to games that I don’t enjoy. What would you do? I don’t have a TV and I am using a laptop. I watch Mike Tysons Super Punch Out on YouTube for fun.