The Xda community aren't responsible for the workarounds in my experience, they usually just regurgitate methods found on Chinese sites or post links to YouTube videos copying these Chinese methods/workarounds.
When I got the P40 Pro plus the initial method worked first time, then things became a ball ache.I did a factory reset without backing up once and then went through a hell of a hassle trying to get it to work, numerous YouTube videos, forum visits, download links, zip files containing Malware that luckily windows picked up on, all a right royal pita.
In the end I just settled on Huawei's official stance(s) on side loading apps.
Bottom line was and probably still is - If you rely predominantly on Google apps then don't get a recent Huawei device.