i want to modify android app made in java and admin in php (Dedicated Dev)

Dear,
I hope you are doing great. Glad to write to you. Our App name is AgriFarm
we are building India's first ever Android application for my finding agriculture-related daily monthly and weekly jobs and labor.
( Finding daily labor near you throw location searches like urban company partner app find work
We are creating India's first agriculture focus rural job portal in which laborers can find out work and company, and farmer requirements for labor then they can find out through a map.
To find out nearby labor and nearby jobs who enrolled in my app as labor or who want to hire labor.



Now work:

1) https://play.google.com/store/apps/details?id=com.projecthero.android&hl=en_IN&gl=US

I want to make like this.

2) app onboarding screens like this app
Agrifarm me se removed sb screen and question remove kr dijiye onboarding ke like OTP and other. Uski jagah pe
https://play.google.com/store/apps/details?id=app.bharatkrushiseva.com

Is app ke sbhi screen rakhani hai onboarding ki. And isme Jo data hai usko remove krke projecthero onboarding screens me Jo data hai wo daal dena hai.

other optional work is we need to integrate some sdk and also changes in home screen.