Yeah, Zoom is the only reason I keep around my old, dying x64 laptop. I'm hoping now that Zoom has successfully built a native ARM64 app for the mac, that they may port it to linux.
zoom works via box86, on rpi4 (aarch64), you can see several youtube videos of this.
box86 require a 32bits chroot which is difficult to set up on arch/manjaro but is built in ready to go twisteros distribution, which works on pbp.
box64 is in heavy but early development.