Haven't changed my own oil in many years, that's what sons are for.
I do remember putting a thin coat of oil on a new spin-on filter's gasket to facilitate removal.
Poking a screwdriver through it, to remove it, was messy when I couldn't find my usually missing filter wrench.
I had a friend who took her car to a local garage to get the oil changed.
They cross threaded the drain plug and didn't tell her.
She DID notice the puddle of oil under her car the next morning.
Their "fix" was to put some sort of temporary plug in it until they found a replacement(she had a 15-20 year old Honda).
She said that she was going to get a lawyer.
I told her to call all the local TV stations' consumer reporters, as it'd be a lot cheaper!
Sure enough, she threatened to do just that and got her car fixed in 4 days!
At least she had the wherewithal to at least acknowledge a problem.
I knew of a person who took her car to the Monkey-Lube shop. When she looked under the hood after the service she was concerned about a displaced part number 710 that was off to the side on top of the fender. She put it inside the glove box until her next visit for service to which the oil changer installed it in the proper location.
You could always use the German specification...... gutentight.
I've learned the very expensive way to use torque wrenches for a lot of things. Not oil pan drain plugs necessarily, but wheel bearings, lug nuts, etc. A $500 overnight express charge (to avoid blowing another weekend and 600+ miles of road) over the parts tends to drive that home.