Others suggest using another launcher like Nova, which I've done, because the Gemini's simple launcher is weak and featureless.
I tried the Nova (with ads) version then the paid version (Nova Prime installs Nova Launcher). Glad I did because it has many useful features (IMHO) and is configured easily.
Reviewers and users alike rate Nova's 'pro' version very highly over free and open-source launchers.
No problems or short-comings to report. Nova is a good value.
To your question: Pressing down (not tapping) on an icon on the desktop triggers a pop-up box wherein you can edit or delete an icon.
Give the free version a go.
Cheers!
OK, I have been playing with mine for a couple of hours and would like to delete some icons from the home screen and move others. On my previous Androids, a long press on the offending icon gave me the option to drag to the top of the screen and drop on on "delete" - icon gone but app still there if required....
I am sure there is a very simple answer - appreciated if someone could advise me and put me out of my misery.......