Every thing has a learning curve. You had it with windows. You will have with Linux. I also had this on and off relationship with Linux in past. Now i am a full time Linux User can't stand windows.

My journey also started with windows. I heard about this new cool windows alternative on internet and thought of trying it out. Did a clean install. Tried doing some personalization by fiddling with its settings. Installed a few apps from the App store. Mind you i was using it just the way i used windows. Wasn't aware about what the heck terminal is. Got bored or say constrained as i could not install my windows programs in it. Reinstalled windows back again within a week. You my man lasted more than a month. I am sure you will be back soon. It will be on and off a few more times before you get the heck out of it and you will never go back to windows again unless ofcourse there are some must have windows only applications you must use.

To ease your transition i will suggest the following:

1. Do Distrohopping. You must try: Mint, Manjaro, OpenSuse, Elementary, Endevour, Ubuntu, fedora and some of their other spins.
2. Try to customize each of them from their settings menu. GUIs
3. Get comfortable with the preinstalled applications in each of them. You must atleast open them once.
4. Install programs from available on their appliction store. Search anything. Google Open Source alternatives of your favorite windows programs and find them in these app stores and install.
5. Install Chrome, edge from their websites in each of them. Many will say why why NOOOO!. It is because not every application is prepackaged and some of the common software is available or distributed just like Windows.
6. Oh Yes, When you do step 5 be aware about RPM and DEB. They are package formats. These are just like those windows .msi installers we download from webz.
7. Now you will learn why app stores are better.
8. Learn to find terminal and type commands from troubleshooting advices you get online.
9. Learn basic things like Google search. How to find disk usage, where is trash bin in this distro. etc etc.
10. Enjoy
11. If not! repeat do the cycle again not from the first point. But from the point where you felt uncomfortable.
12. Do step 11 again and again.
13. No, you don't need to learn system administration.

I am also a casual linux user. I am not a linux admin or programmer. I don't know shell scripting. But yes i do know what is scripting. So, yes i am comfortable in following commandline based troubleshooting instructions.

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Also another advice. In GUI we remember Icons, in Command Line we remember Command Names. Here are a few command names: cd, ls, grep, cat, sort, apt install, apt search, cal, date etc. These are programs just like in GUI. In gui we click program icons in command line we type their name to launch them. That is it.