Be aware that all the methods described above - entering your seed in to Electrum, in to iancoleman.io, or in to any other wallet - should ideally be done on an offline, airgapped computer. Your seed should never touch an online device, as doing so potentially exposes it to any attackers or any malware which is present on that device and puts your coins at risk.
I would download iancoleman.io from the repository here (
https://github.com/iancoleman/bip39), open it on a live OS on an airgapped computer, enter your seed, then find the private key for the address(es) you are interested in.