Store apikey php/python/js?

Question

API

Guys, hello.
I am making an application where each user will have apikey.
I want to keep apikey in the database closed.
But a question arises that gives rise to several more questions.
Should it be kept encrypted at all?
How can I get it from the database using js (although this is not a problem)?
How can I decrypt it using js from encryption in php / python?
And if I decrypt on the frontend, can they peep the type of encryption and get all the user keys?
So far there are some questions .....

Answer 1

Or maybe instead of racking your brains with security, you will simply take a ready-made solution on the market? Keycloak, Auth0, Cognito,.... Lots of them