Is there a wallet that stores more than one crytpo on your desktop?
Sometimes I use the EXODUS web3 wallet without any problem. Trust wallet can also be used but you need to use their extension to use it in your desktop. But for Exodus, I think they have a Windows and linux version of their wallet that a user can use to store their coins and it supports most of the major crypto in the market like BTC, ETH, SOL, MATIC, BNB and many more. There are few other wallet service provider as well but these are the most convenient ones that I have seen till now.
IMO, Exodus, and Electrum for desktop wallet are enough.
Exodus for altcoins and I always separate Bitcoin on Electrum, I feel safe and convenient to use if I separate them because different cryptocurrencies have distinct addresses, formats, and transaction types, and keeping them in separate wallets reduces the likelihood of making mistakes, such as sending Bitcoin to an altcoin address or vice versa.