Sims 4 Randomly Closes completely while playing

So I've had Sims 4 since around Thanksgiving of 2017. And earlier this year I got the Cats and dogs expansion pack, I've asked for help before on here because i couldn't even play it because of how laggy it was and it would shut down almost right after opening my game. The people said to 'Repair' it and that did help a lot with the lag and I thought it had helped with the shutting down but now it shuts down again, except its different this time, before it would just go to my desktop screen and say the game quit unexpectedly and now the game freezes than the screen turns black ad the game stops completely as if i quit the game and it doesn't give me any notification on the screen. I always loose all progress and have to redo everything and at this point i don't even try and get on my game.