New to stocks

Hi guys

I am quite new to buying stocks, and have started with Nvidia on a recommendation.

I have a whopping grand total of (1) stock 😆. Im wondering if the price is likely to go down much and if it is worth me holding off to buy some more when it does, or is it only going to go up from here?

I dont mind buying more now, but at approx $175, it seems a bit much for me to buy too many more (Im not wealthy by any means, and the 1 stock I do have has been purchased in increments while I learn what It’s all about).

I seen someone purchased it at $35, and while I dont expect it to get that low, does anyone think It’s likely to dip below say… $140?

Im sorry if this is a dumb question, thanks Im advance for reading :)