how is rr calculated in ranked

i want to know
i just won a game, 26-19, 281 acs, 13-11 match, got 12 RR!?
now i win the next one, 37-13, 420 asc, 13-10 match and got 24
idk tbh but i swear to god i should be getting more than this

Rng

aite bro I will give u a lil bit more next time u play

Its also based on how much the final score is if you win 13-0 you will get more rr
Source: saw it somewhere maybe r/valorant

.

37 only? not 40? kinda L tbh XD

https://www.vlr.gg/156009/valorant-worst-elo-system-ever/#17

you got 12? was it 5 stack?

skill issue