This issue is likely caused by Steam's controller configuration treating your Flydigi Apex5 as a DualSense (PS5) controller when launching Apex Legends. Here's how to fix it:

Open Steam → go to Settings → Controller → General Controller Settings.

Uncheck "PlayStation Configuration Support" if it's enabled – this often causes non-Sony controllers to be misidentified.

Then go to your Apex Legends game properties → Controller tab → set it to “Use default settings” or “Enable Steam Input” and test both options.

its not a sony controller, so make sure generic is ticked, and ps is unticked