$WealthNavi (7342.JP)$
Is it a good time to buy WelthNavi?

$NVIDIA (NVDA.US)$
I am a 20-year-old who recently started investing. Since installing this app, I have been closely following the bulletin board. I always appreciate your help. I currently own about 0.01 million yen of nvidia and as a university student with limited financial resources, I want to buy more, but I'm not sure about the timing. I was planning to buy after it drops, but I have no idea how far it will go down, so what should I do? Also, if possible, I would like to learn about short-term stocks to increase my capital as I am currently only investing in long-term stocks. I'm truly sorry, but I would like to seek everyone's help. 🙇‍♀️