I guess it depends on the kind of existential crisis. When I think existential crisis I think "nothing really matters, everything is impermanent, and we're utterly insignificant in such a vast universe." In that case, I'd say embrace it. I always found it so comforting to think that all my problems are so fleeting and insignificant, so you can be free to do whatever you want. But I know many people find it the opposite of comforting, so I'm not sure if this helps
or if you really want to find meaning, maybe view things like: humanity is the universe's way to percieve itself, which is actually pretty cool. And of course you can always find purpose in devoting yourself to other people