You have to ask what is your long term goal. Is it to hold for a year? 5 years? 10 years? 1 month? That determines everything. If it's long term it doesn't matter what price it is. Trying to time the market is an amateurs move. Even professionals can't time the bottom or a crash. They play the market and hold reserves. When things are hot they sell while the sheeple are buying. When the sheeple are selling they buy. Notice this last correction that was linked with the crash in the stock market earlier this year from the virus - While everyone was screaming the sky is falling the smart investors bought after the initial panic and rode it back up. Most professionals have either sold their position or have already taken profit so either way they've won.
These are the type of considerations someone has to think about when getting into a market. If you don't know anything and have no interest in learning, then just buy today and forget about it until a few years from now. Don't fall into the trap of checking price every hour and panic selling when it dips.
Either be in or out. Either hold or trade. Get educated regardless. NEVER put in more then you are willing to lose. If it went to 0 would you care? If you would then don't do it. Get rich quick is a quick way to get poor quick.
Should you buy or should you wait? You have to answer that.