Could really use some insight on growing my business!!

I work for a small ammo and weapons accessories resale company called Firequest International, and lately business has crawled to a halt. Our biggest problem is we do zero advertising so I’m trying to get everything’s tips and tactics on how y’all market yalls business? I’ve heard social media is a great place to start but with the new algorithms in place from what I’ve read if your not very active on other peoples social media page then your page just won’t get many views. What are the best ways to advertise and promote your business without having to spend all your free time doing so? While your at it please check out my company, constructive criticism is welcome

https://www.firequest.com/new-items.html