Every piece of advice on Time and Date settings begins the same...
Settings->Time & Language->Region
The first problem is that this pathway does not exist. Turns out that all these useless answers are Windows 10 answers

It is well know and numerous question have been asked that Windows changes the date format as the region changes.
I don't want to ever change my region, or my date settings. I travel extensively between regions and no matter what happens, the date format changes to the local format, sometimes immediately after I have changed to UK.
I swapped out for Chrome specifically to prevent changes to the date format.
LET'S GET THIS STRAIGHT
I never want any browser to change the date and time settings, not today, not ever.
I NEVER want to see Thai, Chinese, US or Arabic date formats in search results. NEVER.
NEVER AGAIN
I want to fix the date format as US, but whatever is chosen, it must be fixed and guaranteed - FOREVER.
I travel frequently between the Gulf, Thailand and China and have never found a solution to this problem.
I recently swapped from Chrome to Edge for this specific reason. This must stop. Both my income and my mental health are suffering.
A VPN will not solve this problem. I require a solution for Windows 11 and (fully updated this morning) Edge, without recourse to third party software.
A POSSIBLE SOLUTION

If this works - and I cannot know whether it does wi9thout simply waiting for something to go wrong - it seems very brutal. There may be implications far beyond date options. What are these implications?
THIS SOLUTION CATEGORICALLY DOES NOT WORK!!!!
Nothing is different and I am back to Thai dates again.

Can no one free me from this hell?