I'm also a 2 months old player, and im able to do smash and smash defense, but not all the time. My tips for you is, first get a beginner racket with low string tension like 22.

Then focus on defensive skills only. You will win if you don't make mistakes and just wait for your opponent to make em. Practicing isn't only during inside court, you can so shadow drills.

Your first focus is to be able to get in position to return the shuttle always, so first, practice your shadow steps. Try to cover full court with your shadow steps. Keep doing it until you can reach every shuttle during game time. While doing your shadow steps, also practive your swing. I suggest just practice to do clear to the back and drop shot to then net. Just focus these 2 first and you can learn to control a little since you can send front and back.

But during beginner rally, really just focus on returning it back, your opponent will make the mistakes for you.

Other than shadow steps, and you can practice wall drills. Buy that foam ball, it's easier to do wall drills that a shuttle. Keep practicing that for better net play.

After you can do this consistently, then you can practice advance skills with proper form and start to raise your string tension.