Cut "secrets" for "3 steps" and got clicks.

Made the same mistake when I first started messing with lists and it cost me way more than 2 days. What really helped me was getting in the habit of skipping the copy altogether and just building a brand new list with a list comprehension, way less to keep track of. Something like new_list = [x for x in old_list if whatever] instead of trying to remove stuff from the old one as you go. That pattern saved me so many headaches once it clicked, especially when you need to filter things out. You aren't dense at all, this one trips up basically everyone at least once.

So why'd you even keep it for the whole month after the first week? Could've cancelled right then instead of waiting for the billing cycle to punish you.