Spacecat_4, to find your transaction on blockchain explorer just right-click on the transaction in Electrum history and select the option to see the details of the transaction - a link will open in your browser, and you will get a site like
this - then you need to copy the hash of your transaction. There is a possibility that the transaction can be accelerated, but only if it meets the criteria of the minimum fee.
Depending on his transaction fee, rebroadcasting the transaction could help.
This is not true, re-broadcasting is something completely different and will not help the transaction to be confirmed faster, but only to keep it in mempool.
There are additional services claiming to be able to "accelerate" a transaction. Their ability to get a transaction confirmed faster is limited to re-broadcasting your transaction, to help in the situation where that mining pool has dropped your transaction already.