Cake Wallet exists in Beta for Linux, which leaves Feather Wallet. I'll install this (in a VPN, of course) and recover my private key from Coinomi.
If you don't need to use it smartphones than Feather wallet is fine monero wallet especially for people who are familiar with Electrum, it has almost identical design and menus.
I never tried using Cake wallet (I remember they had one serious bug), but I think anything is better than Coinomi.