Help me install nvenc for use OBS studio encode

#1

help me install nvenc for use OBS studio encode
i want to install synaptic package manager but i can’t download (app store)
help me please

#2

To get support with OBS studio you have to go here

#3

From version 3.0 on, Endless OS started adopting Flatpak, a new application distribution system

#4

What is used instead of synatic package manager flatpak?

#5