+1 on what has already been said. I have a Qubo Elite fluid trainer. Well, 2 actually...(wife & I side by side) I think fluid is harder than road but that's because there is no coasting and no room for dead spots in your pedal stroke. The resistance is determined by what gear you are in & how hard you want to pedal. Just like on the road. On the Qubo Elite the pressure on the tire from the drum is set by the riders weight. So there is no adjusting, no set-up, nada. Just click the bike in and go. I used to use it with a speed/cadence sensor paired to my Garmin with the GPS turned off so the Garmin never knows it's not actually going anywhere. After a while, I got smart and put the "trainer-use-only" tire on the Powertap G3 wheel.

The system works great, it's simple. It's also quiet. I watch old movies or cycle training videos on Youtube. I think the Garmin will pair with Zwift, but I've never downloaded the app to find out.

Craigslist is your friend. People like to buy trainers but they don't like to use them. That's a win type situation for you.