Valve doesn't share the infos publicly to avoid well , boosters , but then again there are already a lot of rank boosters in the game , but at the very least they don't have the precise info anyway.

It's mostly counted by wins , maybe a slight consideration of frags put into it. I once had a major losing streak while being on the top for most of the matches there , like 20-30+ frags. My friends who queued with me who didnt do so well , dropped earlier as for me mine still maintained.

Anyway , you don't need to reset your rank in order to play good , you just need a better team , someone who's willing to listen and can play decently , that is enough for you to reach better ranks. Remember , if you have the skills , no matter how hard you're losing , if something goes well on your side , you can take that advantage and bring it back , that comes from many many hours of playing of course. I have like 2.8k hours and I'm hovering between the LEM and SMFC rank and there's still plenty of better players out there who has like lesser hours , don't fret , some people learn fast , some learn slower.

u preety sure there is no other way to rest ?because my rank is really suck! win almost 300 + still in low rank

how do they count rank btw?
i only have 14 competitive wins but silver 3 (soooo many competitive losses). they calculate by round? by game?
dont get how it works

Yup , true for the wins part , not too sure about the mvp part. Though rank doesn't really matter nowadays after the banwaves , the standard for all ranks dropped drastically , I've seen LEM's/SMFC's playing like 1/2AK rank style ,  that's how bad it is now.

Though it's super easy to get promoted nowadays , I stopped playing MM before the banwaves because it was just getting ridiculous every matches there will be at least 1 obvious hacker inside , stopped for 2 weeks or so , the 2 banwaves that came banned a lot of the hackers in my previous matches and I started playing again , loss a match , won a match , instantly went up to GE , I guess they removed a lot of my losses for me to rank up that soon.

That i do know of , just that people who disregard ranks , will play better , not giving a crap if they lose the rank or whatnot.

Think of it like , if you're decent enough , you can get back your rank anytime you want , so having the ranks on top of your head , stressing out about it , will just frustrates you once you are about the lose the match when theres still a chance for a comeback.  I'm speaking from experience , i was once who kept thinking about ranks too , but further down the road , I didn't really care anymore , it just makes me play worst.

Anyway , for people who are really passionate about the game , should watch more Youtube videos , such as WarOwl or watch pro matches , you will learn a lot from those , how to hold a certain position and stuffs.