So how can we know we are at the bottom or close to it and what is a good strategy to deal with this dip?

Yes timing the market is difficult and not a good strategy always and yes past performance is not indicative of future results.

But with that said what can we look for that could indicate we are at the bottom and/or the market goes up? (USA)

If Trump removes the tariffs? If peace is achieved between Russia and Ukraine?

I'm currently buying the dip through funds and is gonna keep doing it but doing so with a small amount of money at the time. Don't want to make to much investment. I'm no expert though but I predict the market will eventually go up as if always does.