Okay, I might sound stupid but I’m trying to understand the real-world application of DSA?

I started learning DSA but I didn’t know what I’m gonna make once I learned the whole thing?

I’m a full stack developer and I know if there is a frontend developer his work is to code a site from a figma file or take the API coming from the backend and use Redux or other state management to do stuff or if there is a backend developer I know his work is to make backend parts building APIs working with DB and other stuff…

But after learning DSA what I’m gonna build? What kind of work am I gonna do? Or after learning where I can use my DSA knowledge in my web apps?
All I see are people talking about FAANG companies online and I haven’t found that many videos or blogs on some DSA project in python.

Can someone please clear my doubts it would be really appreciated I’m so confused right now.