Misfires on my bmw x4 35i n55 2015 f26

[Methly]

I’m having issues with some codes for awhile now and I can’t get any of the shops around me to fix it. The car is misfiring during start up only. Then it will level out after some time passes or I rev the engine up. I took it to the shop for cylinder six misfire, they replaced the issue and the misfire got better between 1000rpm-1750rpms. But the problem still persists

Codes-
P0171 system too lean bank 1
P0300 random/multiple misfire detected
P0306 cylinder six misfire
P0301 cylinder one misfire detected
Also I have ten of these same codes but some say permanent some say pending and some say current

Here’s all the codes I’m getting

Supposedly the guy I bought it from replace spark plugs and coils, also the shop didn’t say anything about those needing to be replaced. I think the issue might be deeper. I’ve also notice the weather affects the severity of the rpm’s movement, colder weather and it’s a lot more smooth hotter weather and it’s more aggressive

I also had the charge pipe blowout on me, replaced it with an aftermarket VRSF charge pipe. I saw a small amount of oil residue within the charge pipe any help or advice would be great

180k miles

[Breeze1]

The generic/emissions codes you shared could be due to many different things: unmetered air, fuel delivery issue (clogged fuel filter, injectors, low or high pressure fuel pump), o2 sensors (although unlikely if the issue happens only on cold start)...
You should get the car scanned with a BMW specific tool, to narrow things down.

[bmwdirtracer]

Yup. Trying to diagnose your car using emissions p-codes, is like trying to use a Ouija board.

Take the car to a BMW specialist independent shop that has ISTA (BMW's diagnostic system). Besides running through the ISTA test plans for the actual BMW codes , a smoke test of the intake system will likely be done.