What is the usage of Bixby services in J7 NXT?APP SIZE: 74.7MBRAM USAGE 23MB

NO UPDATE ON J7 NXT (Q)THAT'S WHY I WANT TO DOWNGRADE TO (N)[TWRP & ODIN]ONE UI 1.0 HAS TOO MANY BUGS AND USELESS APPS LIKE BIXBY ... ETCWHICH IS RUNNING TOO MUCH WITHOUT ANY REASONQ OS AND ONE UI 2.0 IS OPTOMIZEDI AM NOT GOING TO INSTALL THE LETEST...

I can't stream games with my Galaxy J7 NXT because it is getting slow and heating.I can't play standard graphics.I can't play 60FPS GAMES

A gaming phone with 1.8GB RAM 128GB ROM✅2.Amoled Display(4K resolution)✅3.Cheap (under Rs.20000)✅4.No Fingerprint sensor❌5.No Duel Camera❌6.Normal J2 Camera✅7.Good Battery✅8.No Infinity Display❌9. Android One✅10.Good Processor

Touchwiz launcher is slower than another third party launcher.