I have written a few articles previously on ESXi on Arm (located here, here and here). In those articles, I covered everything from going over what you need to install ESXi on a Raspberry Pi 4 B ...
I have 2 physical server's so I can setup a fairly decent lab if needed. I have been running esxi,vsphere, and vcenter for well over a year now at home. Nothing crazy, just some game servers, file ...