When to use Flexbox vs Bootstrap?

Hi Everyone,

I just got done with learning Flex and Grid lesson. Somebody had mentioned the Bootstrap framework, and that big development team uses it and it’s more common than Flexbox. What are the benefits of using Bootstrap if it does all the heavy lifting? Was learning Flex and Media Queries a waste of my time?

no absolutely not a waste of time.
The flex/grid/@media queries are very important.
Bootstrap may or may not be used by a company (depends on the company) but you can’t call yourself a web-developer and not know how to do layouts and media queries.