I think that this is more and more an issue. As the number of web playable submission increase, I find myself not taking as much time to play downloadable game as before.
The trailer is a good way to add confidence in your game but, maybe because I'm paranoid, I'm always launching in some king of VM/isolated environments.
Hence, yes a web export of a game is a very very efficient way to have more players, I would say #1 way just before the thumbnail. I think with Unity (the engine you used I think) it is pretty easy to have a web export, same with Godot.
(btw, your game looks great)