So I know I am not a pro, but I will give you my think of view aswell.
I have a 400 euro PC, not an expensive mouse, a normal keyboard, a small monitor....
map awareness and looking on minimap, looking what teammates do, footsteps are waayy more important.
The most important thing is reflection, I mean dont be angry, dont be mad.
Instead of rage, search for own mistakes and try to do better next time.
Last but not least, if you have a bad day, then just relax and do something less frustrating.
End of the day its a game and should be giving you fun and not negative vibes.
PS: dont be afraid from anyone