If you continue to open your wallet, the wallet will synchronized with the blockchain again and likely the server the wallet depends on will continue to rebroadcast the transaction. If your transaction now stuck, it is better not to open the wallet, or making sure the wallet dk not synchroniz with the blockchain. With this, if you import your seed phrase or private key on Electrum, with time, a server or some servers will drop the transaction from their mempool so that you can rebroadcast the coin again in another transaction. I have seen people that used Coinomi, Mycelium and Trustwallet that import the seed phrase on Electrum and were able to rebroadcast their coin later.