How to change video background without greenscreen with phone?

How to change video background without greenscreen with phone?
Hello friends,
Mera name RAJVEER hai.
Aaj mai aapko batane wala hu
kaise app apne video ka back ground change kr skte ho apne phone se .
without greenscreen

[@Priya_keshri]

Nice 👍

[@anuragjereaction]

Bhai 😮 op ❤❤❤❤

[@retreatbites]

Thank you bhai

[@user-ce5xp5ub3o]

Thanks bhai🎉😊

[@Priya_keshri]

😂