Uninstall it and reinstall?
You don't have to uninstall it. Just create another wallet the same way you did before
https://docs.featherwallet.org/guides/create-walletThe link could help with explaining it.
Is feather only for monero?
I have not used feather wallet before but their website explicitly states it is.
Feather is a free, open-source Monero wallet for Linux, Tails, Windows and macOS.
I guess you confused it for a Bitcoin wallet.