Steam's free games roster is constantly growing, with new additions coming almost daily. April 2023 saw a number of particularly good new releases come to Steam. Here are four fun free games you might want to check out if you're in the mood for something new. https://www.notebookcheck.net/4-new-free-Steam-games-from-April-2023-including-a-rare-MOBA-game-that-isn-t-pay-to-win.713475.0.html
The vast majority of tactical shooters, hero shooters and MOBAs are not pay to win. I can think of very few examples that truly are, in the case of MOBAs the only pay to win one that's still around nowadays is pokemon unite. All the other MOBAs require strategy and skill to win.