Truths are sometimes hard to come up with. I like things such as: what's your most embarrassing moment? or what do love/hate about yourself? Dares are more fun. I like: ask [insert person here] out, or go into the neighbour's yard and stare through the window. There are a lot of truth or dare apps, which are fun but sometimes repeat. Do random crazy things for dares as well, like roll around on the floor in the living room yelling "I'm a chicken!" or twist things. For example, if you wanted a truth answered but they didn't choose truth, you can say, "I dare you to tell me [...]." Hope this helped!
You can ask questions like what is the craziest thing you have ever done in a crowd or describe the most embarrassing moment. For dares you can tell the person to go and flirt with the first person they come across.