Cheap and good convertible?

I'm allowed to pick a notebook for my birthday

And while researching I came across convertibles

But my father said it may be a maximum of 600 euro cost

And there I wanted to ask if you know what in the price range and what are good

I just want to watch the video and use it for school work

https://m.notebooksbilliger.de/hp+pavilion+x360+14+dh0001ng

https://m.notebooksbilliger.de/lenovo+yoga+530+14ikb+81ek00xmge