This app was mentioned in 3 comments, with an average of 1.33 upvotes
I've been using the DroidJoy app with reWASD to play games on PS Now and it works perfectly. There's a free version, which is a bit limited and with ads, and a paid version which is like 2€ I think (https://play.google.com/store/apps/details?id=com.grill.droidjoy). Note: I'm not sure but you probably need reWASD for it to work.
Try this one, but it costs, one of the only apps that emulates an analog stick correctly.
https://play.google.com/store/apps/details?id=com.grill.droidjoy&hl=en_US