The internet is covered in millions of Unity script examples.
As you have found, on their own they offer very little value to a beginner.
Even if you found some golden magical mystery compendium of every script written ever for Unity, it too would have literally zero value.
Why?
The script is the teeny tiny part.
The actual meat and potatoes is in the “what problem are you solving?” and “how are you going to solve it?”
Not only that but script in Unity is EXTRA-worthless because unless you connect 100% of the script parts into where it needs, including prefabs, scenes, other scripts, scriptable objects, assets, etc., the script alone is useless.
This is because this is actually engineering, not art. There’s art too it, but the art becomes irrelevant without the engineering, because even one wrong bit and everything does not work. Software is like that.
This proves that you’re doing it wrong. You don’t “watch tutorials.” That’s not a thing in exactly the same way you don’t “watch brain surgery” to learn how to operate on people’s brains. Instead, this is how learning works:
Tutorials and example code are great, but keep this in mind to maximize your success and minimize your frustration:
How to do tutorials properly:
Tutorials are a GREAT idea. Tutorials should be used this way:
Step 1. Follow the tutorial and do every single step of the tutorial 100% precisely the way it is shown. Even the slightest deviation (even a single character!) generally ends in disaster. That’s how software engineering works. Every single letter must be spelled, capitalized, punctuated and spaced (or not spaced) properly. Fortunately this is the easiest part to get right. Be a robot. Don’t make any mistakes. BE PERFECT IN EVERYTHING YOU DO HERE.
If you get any errors, learn how to read the error code and fix it. Google is your friend here. Do NOT continue until you fix the error. The error will probably be somewhere near the parenthesis numbers (line and character position) in the file. It is almost CERTAINLY your typo causing the error, so look again and fix it.
Step 2. Go back and work through every part of the tutorial again, and this time explain it to your doggie. See how I am doing that in my avatar picture? If you have no dog, explain it to your house plant. If you are unable to explain any part of it, STOP. DO NOT PROCEED. Now go learn how that part works. Read the documentation on the functions involved. Go back to the tutorial and try to figure out WHY they did that. This is the part that takes a LOT of time when you are new. It might take days or weeks to work through a single 5-minute tutorial. Stick with it. You will learn.
Step 2 is the part everybody seems to miss. Without Step 2 you are simply a code-typing monkey and outside of the specific tutorial you did, you will be completely lost. If you want to learn, you MUST do Step 2.
Of course, all this presupposes no errors in the tutorial. For certain tutorial makers (like Unity, Brackeys, Imphenzia, Sebastian Lague) this is usually the case. For some other less-well-known content creators, this is less true. Read the comments on the video: did anyone have issues like you did? If there’s an error, you will NEVER be the first guy to find it.
Beyond that, Step 3, 4, 5 and 6 become easy because you already understand!