UpdateYourselfAdobe

I'm looking for a router. I have an att gateway currently but I cannot connect a storage drive to the USB port on it because att blocks network storage apparently. I'm told if I get my own router I can connect it to the att gateway and then plug my storage drive to the router finally. Hoping I've been told correct. Anyway, below are my needs. Nothing too crazy I don't think.

1100 sq ft apartment

Att only sells 25mbps where I'm at using a BGW210 gateway

Device count 10 (3 phones, 2 laptops, 1 ps4, 2 fire stick 4k, 1 smart tv, Blink Security 3 camera). Realistically only a few devices are ever in use at the same time.

Heaviest network usage might be PS4 for the occasional Fortnite, Netflix or backing up photos to network attached storage that I'm wanting this for.

Budget: cheap as possible to achieve my ask

Wall construction is drywall, router center of apartment. Currently there is no lag or failure to meet my usage demands. Speed test usually shows 8 to 12 mbps

I'm looking to store all my photos and videos taken with my phone, GoPro, drone and two cameras I use for photography. My storage is all over the place and I want to organize/simplify.

Here's what I'm hoping to accomplish:

All my pics and videos start out on my phone for editing before they get stored away eventually to a drive. Instead of plugging in and manually transferring from phone to HDD I'm wanting to back them up wirelessly from my phone and have them end up on a drive at home. I'd like to replicate copies to two or three drives at home when that happens. What do I need to achieve this? I'm imagining that 8tb would be more than enough space for me.