Take advice from someone who has been investing for the past 10 years and has made ridiculous money while these perma-bears are still poor.
You can’t time the market. Keep buying stocks like they will continue to go up, at the end of the day, if the market crashes and values tank, it’s no big deal. Keep holding your stocks, they will recover, in fact buy while everything is super cheap. If you would have bought back in 09-10 when everything was cheap you would have made mad money like me.
If you are hoarding cash right now, do so with the intent to buy in the next major crash, whenever that is.
Just keep investing, entering at age 30 you are late to the game and need to make up for lost time.
You don’t “lose” until you sell, even if your parents lost value in 09 they would have recovered it all and more after a few years.