How do I memorize variations from an opening?

Do I literally just have play it like a 1000 times?

no you do not need to do that

I would find a free chessable course on the opening, which makes it much easier. Also review the games you play with the opening and see where you played a move that wasn't in your opening theory, if that makes sense.

Well on second thought it would be better to focus on longer games and tactics, but if you truly wish to go after openings...

Openings aren't that important, I would just memorize one opening for white and study it. Stay on the tactics

The higher rated you become, the more important openings are. At your current level, I don't think that it's necessary for you to study variations of an opening. Many of your opponents will not follow theory. Instead, focus on understanding the main developing moves and the principles behind them. But if you still want to memorise an opening, I recommend using Aimchess Opening Trainer. I have found it really useful in memorising different variations.

You need to become intuitive with your openings. Understand the ideas of the variations you're in. Eventually your intuition will make the best moves by understanding the position rather than memorizing it.

I agree with @RakeNightFur. At your level it is usually more beneficial to know the goals and ideas of your openings rather than the specific variations. Still you should know good opening principles. That being said, you should probably stay away from openings that are either very sharp or have an immense amount of theory unless you REALLY want to learn theory. Even then you should expect your opponents to play moves that do not make sense in the theory and likely after a few moves in an opening, your opponents will be winging it. That being said, you probably shouldn't be playing Alekhine's defense or Ruy Lopez.

dude all you need to do is look at a opening book study it and memorize it

Go for the principles first!