Rear bang/clunk sound

Hello
I don’t post on here very often

looking to see if anyone has had the same experience with a clunking/banging noise that’s coming from primarily the interior driver back corner
I have checked the jack and tools
They are secure
The spare is secure and tight
The taillight is tight
The wheel and rear suspension seems ok

I removed the gate trim and exposed the speakers
That stuff all seems secured
I’m wondering if it’s the back gate door seal ( however it seems tight too)
The noise started after it started getting cold out….
Has anyone experienced this type of super annoying noise?
Thx