I tried a similar strategy sometime ago, though I didn't ask them to leave feedback on my game: I just played their game, left a review and feedback, and hoped that they would check out my stuff.
With hindsight, it should have been expected, but out of around two dozen games, I got like 1 or 2 people to play my game.
Note: I was playing only Metroidvanias(sorted by the newests), as that is the kind of game I am currently developing. Maybe playing and reviewing all kinds of games would be better!