Unity 2019.3.11 am i the only one pulling his hair out!

I don't know what's going on, with this unity 2019.
I was fine with 2017, most solid unity made.
Then came 2018, most unstable unity made. So i stayed with 2017.

Then came 2019, most ah, indescribable unity made!
i mean what the hell, same game was building fine on 2017 both IOS and Android, gave million error with 2019.
Tried to fix errors, then million error on Xcode.

Said to hell with IOS,

Made a copy and renamed to Android Version.

Android, was always an easy app to build, only problems were with manifest sh.t stuff, sometimes with Dex, but that's about it.

First time in my developing career that i see over 999 errors to build for Android.

What the hell is Unity doing!

Now my project it upgraded to 2019, going back to 2017 is not possible due to limits with 2017 and new Xcode.

Should i quit developing all together!

Seriously after wasting so many days converting UnityScript files to C#, because 2019 wanted so.
Make all basic scenes and game first scene, which i can build on later to make the rest of the game levels.

Now i am stuck!

 

This may be a sign that it is time to invest in learning to use version control. With version control, downgrading your project is as easy pie.

 

Version control, can you elaborate abit here, what is that exactly?

 

Something like Git.