Question about lucky trades? Easiest way?

Hi,

What is the easiest way to obtain 50 lucky pokemon in trades? I traded my old pokemon from 2020 and before to make them automatically lucky, but I think I read there’s a limit and I hit it.

Is there any other way or is it just to get lucky or to become lucky friends with someone? I currently have no lucky friends and idk anyone irl to trade with besides my husband.