Get Comfortable with the Downgrade Process
If you run into annoying problems on the iOS 13 beta you can downgrade back to iOS 12.
If the going gets tough, you can downgrade to iOS 12.4. Moving back to official software could help improve your device's performance.
Unfortunately, you can't downgrade to anything older than iOS 12.4. Apple's closed off the downgrade path to iOS 12.3.2 and below.
If you haven't already, we recommend getting familiar with the downgrade process before you download the iOS 13 beta.
If you don't feel comfortable with the downgrade process, you might want to stay put on official software.