Ok, so I've been thinking for a bit, and I know there's a ton of alternative "libre" frontends for websites like YouTube and Reddit. However, I was thinking: what If I just wanted to make my own frontend? Not specifically for the intentions of "libre", but I wanted to change the controls and appearence of the website. I'm honestly unsure of how to approach this. Any thoughts?
No offense but you should probably start by learning some frontend development (e.g. VueJs) because your pick sounds like you still don't understand the 'stack' architecture, divided between API endpoints (e.g. flask) and the reactive components (Javascript)..