Trying to put isp router in bridge mode, very much in over my head

Hi all,

I thought it would be as simple as flicking a switch to change from router to bridge mode and plug in my own router, and that couldn't have been further from the truth :(

My ISP provides a huawei hg8145v5. I ordered a static IP from them as well. They gave me full access to the router to be able to put it in bridge mode. The router I'd like to handle all actual routing is an asus zenwifi xd8.

The setup I'm going for is ISP ONT/Router > Asus Zenwifi XD6 -> TrendNet 10g unmanaged switch -> NAS, PC, server

So in the isp router, I set it to bridge mode and connected it to the wan port of the asus router, then connected LAN 1 of the asus router to my 10g switch. basically just inserting the asus router in the chain that had been working before.

I had no internet at all. Strangely, the asus reports that the internet is connected, but the speed test on the qos section cannot connect whatsoever.

I thought it might have something to do with the static IP, so I tried setting the static IP assigned to me to the WAN IP, used the same subnet mask the isp router had assigned, and set the isp router as the gateway. Same exact thing. Basically everything I tried resulted in either a "connected" status yet no internet, or a "disconnected" status.

I'd really appreciate some help. I really though I'd just change the isp router to bridge mode and I'd be smooth sailing but I've basically blown up my network. Also for some reason, the windows network tab is not finding my NAS anymore. I can only connect by typing its local ip or mapping a drive, but I used to be able to go to the network in window explorer and my nas would show up there and I could just access everything I wanted that way. anyway, I'd appreciate any help. i've been at this for literally the entire day and am only now reaching out for help. Thanks!