Hello! I'm sorry to hear that you're experiencing issues with your touchpad gestures on the Acer Predator PH315-53. Have you tried the following troubleshooting steps?
1. Update your touchpad driver: Go to Device Manager, find your touchpad under "Mice and other pointing devices," right-click on it, and select "Update driver."
2. Check your touchpad settings: Go to Settings > Devices > Touchpad and make sure that all the necessary gestures are enabled.
3. Perform a system update: In some cases, touchpad issues can be resolved by performing a system update.
4. Disable and re-enable your touchpad: Go to Device Manager, find your touchpad, right-click on it, and select "Disable." After a few seconds, right-click on it again and select "Enable."
5. Reset your laptop: This should only be done as a last resort, but resetting your laptop can sometimes fix touchpad issues.
If none of these steps work, it may be a hardware issue and you should contact Acer support or take your laptop to a repair professional.