Another Turn signal Q ( Driver side only)

[Accelo]

With your trouble description the issue almost has to be in the switch. Since the hazards work all four lights are proven to function. Seems you have covered most every other scenario. I would purchase a new switch.
I recommend this seller. I went through the big truck parts sellers and received and received incorrect switch. The price was also less through carswitchs. Then first plug it in, without placing it in the column, to prove the issue as they are typically a pain to replace. Just plug the terminals into the mate without inserting them into the plug first. They arrive de-pined to make the install easier.

https://www.ebay.com/sch/carswitches...75.m3561.l2562