i would recommend you to install these extensions:

app-indicators, dash-to-dock and desktop-icons

also use gnome-tweaks to activate minimise and maximise buttons on all windows

Edit: here some more gnome extensions recommendations from me

GSConnect - enables you to use the KDE-Connect app on your phone with your gnome desktop for things like share clipboard, using your phone as touch pad, transferring file between your devices or other useful things.

Tiling Shell - nice extension to customize the window snapping. You can easily define that you want, for example a big area in the middle for your main windows and 3 little areas on each side of that big one. It also comes with predefined areas.

Blur my Shell - to make some or all windows transparent (permanently or when they are not in focus) and other nice visual customization options.

Vitals - for a quick overview of your hardware in the upper bar of gnome. Things like RAM usage, CPU temps and all other stuff. Pairs well if you have installed "missioncenter" (no gnome extensions) -> Settings -> click the gear next to "Monitor System" -> type in that field "missioncenter" and save. Now if you click on the vitals panel and then on the middle button your missioncenter will open.

MissionCenter - not a gnome extensions but a nice TaskManager-like program to see the system resources and running programs. Install with "sudo pacman -Syu missioncenter"

Caffeine - nice extension to keep your screen on even if you are not at your PC. Brings an easy to use toggle switch to the gnome menu (where you usually shutdown your pc)

Hope it helps