muun has its place, but not for zaps.
Wallet of Satoshi is the simplest for receiving zaps, Zebedee works well too but its more than just a custodial lightning wallet so it adds layers of complexity.
Eventually we should all be moving to non-custodial lightning wallets but they are overly complicated for normies to set that up for zaps.
In the meantime don't keep too many funds on the custodians , and its simple enough on a mobile device to occasionally move WoS sats over to something like Phoenix wallet.