e.g. Using Electrum offline (air gap for safety) you can build a wallet easily from SEED. Now you can open that air gap wallet and get the full PRIVATE key for any address you want to work with. Once you have the full private key to any address you can literally move the coins using too many methods to comprehensively mention here. No fears at all!!
An easier method (specially if you have a lot of used addresses) is to first recover the wallet from the seed phrase then go to the console and enter "getmasterprivate()" to get the master private key (xprv) with a quick search you can find the derivation path and you already know your address type.
This master key can be used in any other deterministic wallet to get the same addresses since there is no mnemonic to BIP32 seed conversion method that is specific to Electrum anymore.