It is normal, you can accept reality or not.
This thread is full of examples of the same artifacts in the same quantity taken by other phones as well as statements from Huawei and Samsung that you refuse to believe.
Ultimately, it's your call.
If you can return your phone, do so, you will never be happy with it.
If you can't, sell it for the same reason.
Apple will not be changing the design of the phone, and there is nothing to "fix."
If you are happy with the flares the P30 gives you, great, only buy Huawei phones from now on and never consider Apple again, it makes precisely zero difference to me.
Continuing to complain about it here will accomplish precisely nothing.