Is thre any easy universal/setting agnostic Sci-Fi TTRPG out there?

Hi! sorry for my bad English but I came here to ask if there was any universal TTRPG with a focus on Sci-fi that is easy to learn and teach and has a simpler combat system that allows all sorts of things like mechs, spaceships, psyonichs, etc

I know many of you are gonna recommend GURPS but, while I personally like the system for its robustness, I don't think it is easy to teach and handle and I would like a TTRPG system that is easy to understand and expand.

GURPS is too much and Fate is too bare bones for my liking and for the setting I want to construct into a TTRPG. I would like something like Chronicles of Darkness (or World of Darkness) but with a Sci-fi focus.

I know this is too much to ask and a little contradictory.

The setting that I want to work on into settings for a TTRPG is a little complex but in short the premise is that a group of technologically advanced humans arrive on 2040s Earth (which still looks like our modern day Earth only lot more miserable and a little bit more advanced in tech but still similar to what we have now) in order to unify it into a single banner and bring justice and dignity to the humans here. There are alien races, laser weapons, synthetics, FTL and the whole sci-fi shabam.

Is there something like in the middle that can work for a premise like that?

sorry if I keep this short I don't want to over expand because its kind of long but you can ask me anything you need.