I tried Handheld Companion but I was having lots of issues with it. So which one you recommend? WinGPD motion assistant or DS4 Windows?

I haven't seen anybody mention this here yet, so I want to bring attention to it.

Gamenative is an Android app that emulates your Steam (and other launchers, like GOG & Epic) library, with cloud save support. It's not 100% compatibility with all games, but it's been quickly growing that compatibility list over the past year and has gained a lot of traction within the Android community for letting you play Steam games on smaller and lighter ARM devices than the Steam Deck. Steam games on your Android phone is an obvious example, but this has been a popular topic in high end Android gaming handhelds like the AYN Thor and AYN Odin 3.

The most relevant news to this subreddit is that the latest v1.3.0 update added gyro support. It doesn't have real world sensitivity (and this no flick stick) at the moment, but it does have vertical sensitivity sliders, 3DOF options, activation type, deadzone, etc. I gave it a go yesterday with Half-Life 2 on my phone, and it's... decent? Leagues better than touch input only, at least.

I'm planning on trying this out more with a telescopic controller (but still relying on the phone's IMU) on other older FPSs. But this was part of my wishlist for any PC emulation on Android, and it's nice to see progress on this front for ARM devices.