You don't need genuine personal experience with a topic to answer well — Take an Interview questions are scored on fluency, structure, and coherence, not on whether your answer is factually true. A plausible, well-organized response to a topic you haven't actually experienced scores just as well as a completely honest one.
Take the free TOEFL Benchmark Test and get your estimated band score in about 45 minutes.
If you're asked about a topic you have no real experience with — a specific hobby, a type of trip you've never taken — construct a reasonable, specific-sounding answer rather than admitting you have no experience and struggling to fill 45 seconds. Graders can't verify your claims and aren't trying to; what they're assessing is whether you can produce fluent, organized, detailed spoken English.
Practice a range of Take an Interview topics so no question catches you unprepared.