Please advise me on which wallet to use where the facility to enable and disable RBF (Replace-By-Fee) is available. My fully synchronized Bitcoin Core wallet has become corrupted, and IDK, Why Electrum has removed the RBF option.
Electrum has removed the RBF option starting with version 4.4 . All transactions have now RBF enabled by default. You can check it here
https://github.com/spesmilo/electrum/issues/8490You can use Blue wallet to control the RBF option :
https://bluewallet.io/