So the question is how to delete a transaction in Electrum, so that a new RBF type is sent to a mempul but with a higher Commission so that it is carried out faster than the first, but not as now to the same wallet, but to another one, let's say
Seems that your transaction still stuck after bumping the fee and set the transaction as final?
Like other said above, there's no way to delete this transaction once it's broadcasted.
If you want this transaction to confirm very soon you need to do CPFP(Child Pays For Parent) which will help to confirm this transaction(It still depends on your fee).
Follow these guides below how to do CPFP.
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A complete idiot's guide to child pays for parent?Youtube guide
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How To Get Your Bitcoin Transaction Confirmed with CPFPThis video above you can follow it until 4:20 minutes then copy the generated raw TX then paste it on Electrum wallet you can find it on tools>Load transaction> From text then paste the raw transaction. This is only for safety for the private key you own.