How can I find out if my Android phone has spyware? And how can I get it off my phone? Also what's a good phone security for future protection?
Download a trusted Anti Virus App from Googles Play store.
I would recommend either Kaspersky or Bitdefender has both are capable of detecting Stalkerware on Android phones.
After installing it do a full scan on your phone.
Privacy protection, mobile virus cleaner, app lock with private internet access
play.google.com
If you use WhatsApp.
Open the App click on the 3 dots on the top right of the screen.
Then select Linked devices.
Log out of all devices you do not recognize.