BTCPayServer for Bitcoin/Litecpin/Doge, + whatever the software is called for Ethereum and Monero, and you're good. Failing that, Blockonomics is also one to look into. They don't support as many coins though.
Thank you for the advice! Those are solid options, but I still need more coins, and Bucksbus, they can even add coins by request, so I’m sticking with their service for now.