Need a sensitivity finding method that ISN'T PSA

[REYOU]

I've tried the PSA method on different occasions when I wake up in the morning with no warmup and I get different results everytime, even when i set multiple goals including tracking, flicking, track flicking and other techniques/abilities. Does anyone else have any particular method that thoroughly convinced them that their method helped them get their "best" sensitivity?

NOTES:

• I like to play different types of First Person games, mostly shooters. I play CS:GO the most seriously, however I don't want a sensitivity that is perfect for CS:GO or anything like that. I just want it to be universally applicable for consistency across all the games I play for as long as I can convert it.
• When I first started playing shooters seriously, I played Overwatch and my preferable sensitivity was 2.5 in CS:GO/Source/Quake relevance. CS:GO was sitting me around 1.8-2.36 when improved tracking accuracy was a priority. Struggled to settle on anything there due to playing other games as it wasn't as applicable.
• I use a SteelSeries Rival 600 with a rather large hard and prefer a claw/fingertip hybrid grip, hurts my hand considerably after 30 mins of aim practice.

Thanks in advance!

[fortunate reee]

it aint really a method but i generally like using 0% monitor distance for my calculations since it helps with the use across games