I recently got a Samsung Tab 3 Lite and was wondering if Ill be able to run zwift on it?
Try and download it and run it - you will find out soon enough!
This would indicate you can … https://support.zwift.com/en_us/supported-devices-to-run-zwift-H1Cj9QbeB
 - could be too old
What software version are you using? I have Android 10 on a Samsung Galaxy Note 10 Plus, and it performs flawlessly, even better than a 7 month old windows 10 laptop i have. I can link it to Garmin Dual Heart Rate Monitor Chest Band, but not the Garmin Vivoactive 3 watch for heart rate though. Good luck!