TheThose commands in Electrum's GitHub repository's "readme" is for multiple options so the commands given aren't all required,
You'll have to read the instructions too see what the following command is for, there are optional and alternative ways to run Electrum.
TheseThat's if you're talking about these instructions: https://github.com/spesmilo/electrum?tab=readme-ov-file#getting-started

On the other hand, the commands in the website's download page is more streamlined from dependencies, verification and/or installation.
But it's basically the same from "running from tar.gz" part with GUI capability, for example: the "Install dependencies" part includes the two dependencies from the instructions above plus pyqt5.
These instructions: electrum.org/#download

I'd recommend the one in the website first and read the terminal for errors in the first and second steps since it will not work if there's any error during installation of the dependencies and download of the sourcepackage.
If there's error in the first part and you can't figure out which dependency caused the error, try to install those one at time.
e.g.: sudo apt-get install python3-pyqt5
Then replace "python3-pyqt5" with "libsecp256k1-dev" next then "python3-cryptography" third.
See which of the three commandcommands will cause an error.

The commands in Electrum's GitHub repository's "readme" is for multiple options so the commands given aren't all required,
You'll have to read the instructions too see what the following command is for, there are optional and alternative ways to run Electrum.
These instructions: https://github.com/spesmilo/electrum?tab=readme-ov-file#getting-started

On the other hand, the commands in the website's download page is more streamlined from dependencies, verification and/or installation.
But it's basically the same from "running from tar.gz" part with GUI capability, for example: the "Install dependencies" part includes the two dependencies from the instructions above plus pyqt5.
These instructions: electrum.org/#download

I'd recommend the one in the website first and read the terminal for errors in the first and second steps since it will not work if there's any error during installation of the dependencies and download of the source.
If there's error in the first part and you can't figure out which dependency caused the error, try to install those one at time.
e.g.: sudo apt-get install python3-pyqt5
Then replace "python3-pyqt5" with "libsecp256k1-dev" next then "python3-cryptography" third.
See which of the three command will cause an error.