Do I need a different cable instead of UTP for Bridge Mode? Also, can I connect multiple routers?

Hello guys, I'm kinda new here.

So my current setup is: ISP router -> wifi router-> another wifi router.

Wanted to ask if I should change from PPPoE to Bridge mode, since I started being a bit skeptical with ISP tracking and private information.

I am not sure if I need another cable for that, or the UTP cable will work without problems. Also not sure if I can still use the same setup I have right now, if the bridge mode let's you do the same thing. ISP router -> wifi router and from that wifi router, extend to as many as I want using the LAN ports.