Considering which one would be the better buy. I am mostly planning to use it for streaming purposes (mostly Crunchyroll and Netflix).
My local store also has an Apple TV 4k, but I guess that would be overkill considering I don't plan to do gaming or any other demanding tasks.
Xiaomi TV Box S is also available, but I've heard that the mi stick 4k version is a better option that that.
Any advice would be greatly appreciated.
Edit: Also forgot to mention that I don't have any other Apple devices, so idk if that would impact the overall experience if I get the apple tv, since I've heard that Apple devices are designed to integrate with one another.
If you are in US, Apple TV 4K 2021 version is less than 100 and it would be better than both the other options. There are no ads on the home screen of apple TV. Only your apps and nothing else.
Chromecast is the better option of the two that you have listed.