Moto G7 Plus - relock bootloader - banking apps

Is it possible to relock the bootloader?
Does this effect the working of banking apps?

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

It is not because of the unlocked bootloader, it is because of microg.
Some are working, some not

OK. Thanks.
I’ll try Magisk then.

Root is neg.effecting banking apps