If you make a mistake disabling an app, you can easily undo it with this steps.
1. Select the filter type to show disabled apps: Disabled.
2. Check the app you want to undo.
3. Select the action: Enable
4. Click the Apply button.
If you want to reinstall apps, you to need to backup the apk...
Here is a free app called ADB AppControl that will let you disable and uninstall any apps you don't want in your Android device. It also allow you to save the preset so you can reuse it if you reinstall or update a ROM.
Download the app from this link.
How to use:
In your phone's settings...
You can also use BetterBatteryStats yo find background apps that causes wake up locks. Here is the link https://forum.xda-developers.com/t/app-2-2-11-dec-2022-v3-1-betterbatterystats.1179809/