Hello,
I had forge 1.12.2 installed. I deleted the launcher and all directories, re downloaded the game and the launcher, currently 1.14.2 and downloaded forge for 1.13.2. Forge installed fine and even shows up on the launch screen. The only problem is that when the game finally runs, its wont give me single or multiplayer options. Im not sure if its because the games latest version isnt compatible with forge 1.13.2. Ill attach a screenshot, (im on mac btw and relativley new to minecraft)