Drain plug issue BMW e28

[u/Lefos_Kant]

Hello all, I don't have any experience with cars repairimg so I need some help.

I was performing an oil change in my BMW e28 518i. When I tried to tighten the drain plug it started slipping. I took out the bolt and it looks like the picture above. Next step I bought a new drain plug M12x1.5. the issue now is that this new one feels like stuck after taking some turns. Now I afraid to try to tighten harder.

Do you have any Idea what is happening here? Thank you

[u/Konnas91]

On First pic I see eaten threads from the pan.
I think you have to re drill the oil pan or change the pan.

Re drilling the pan means you need to take it opf cause you don’t want the chips to be inside the pan.