If you have a recent – google-blocked – Huawei device use the Gspace app which simulates a generic android phone and allows use of Gmail, etc.. I have a Huawei tablet, works fine, just a little extra work to run a few apps.
I had a pre-ban Huawei phone – it was excellent, still is, the wife has it now, another P20 Pro. I’ve got a Xiaomi phone now, would recommend them; frequent updates. Xiaomi, Oneplus, Oppo didn’t get the ban but why not? What’s the difference?
The Huawei ban is strictly political; Huawei technology for 5g was 2 years ahead of the US. Huawei wouldn’t include the back doors that the NSA and 5-eyes wanted and the likes of Citrix would.
Lots of those quality/security problems mentioned were years out of date and other manufacturers had exactly the same issues at the same times. Lots of common code libraries.