Sadly, I cant provide any screenshots, but what you have to do is go to your launcher, and in the middle, a bit to the higher half of the screen there should be a button called "installations". When you click that button it leads you to a new "page" and there you have to click the new button. Then you will select a version (My recommendation would be 1.14.2). Then you go to the play screen, bottom left click the arrow and click the installation that you just created (1.14.2)
Version 1.14.3
in Help
Posted
you can give me screenshot link maybe or another