In app shop linux mint as Electrum is only Electrum-GRS (org.groestlcoin.electrum-grs) is Your Electrum org or is scam?
Is it?
It seem reasonable to just use that Software manager Electrum-GRS. I think its real, they wouldn't be adding it to their list if its a scam. I just searched in on the app shop too but I think I can rely to it and will download add the dependencies you need for this electrum to run.