shut down credit card

i’ve mostly remained a 0 balance on this card, barely use it and they just closed it??? my credit is already barely a 500 and i’m working hard to fix it starting with bigger things like my cars and collections. will this closing make it drop more?? i’m already at 100% of my limits on my other cards.

edit: yes i am paying off my other credit cards, i went through some traumatic things last year and was not working for 7 months. so obviously my credit took a big hit but that wasn’t my priority at that time. i was trying to feed my family with what money i had not pay credit cards or debts. a lot of my hard inquiries will drop off soon, i’ve caught up on my car payment, had the other car loan fully paid off. so i’m starting with the bigger things first.