Is MoCA reliable? Just bought a new house and wiring Ethernet into some of the rooms will be tricky, but a previous owner already did coaxial in the whole house.
You want to stick with moca 2, and there might be some gotchas with older coax wiring, but I previously ran it for years without issue.
Traced the cables and the only splitter I can find is a moca 2 aware one, and the coax cable that would have been used for cable internet is unplugged so that's not interfering.
Nice when it works, real pain to troubleshoot when it doesn't.
This fixed some (probably modem specific) problems where internet would randomly drop in the presence of moca.