Zero:
This is the most useless thing, looking at a weapon should not be binded to an important key!

bind "I" "+lookatweapon"

One:
I use one key for each grenade, this way I avoid mistakes when cycling through then

bind "f" "use weapon_knife;use weapon_flashbang"
bind "4" "use weapon_knife;use weapon_hegrenade"
bind "z" "use weapon_knife;use weapon_incgrenade; use weapon_molotov"
bind "x" "use weapon_knife;use weapon_decoy"
bind "c" "use weapon_knife;use weapon_smokegrenade"
bind "h" "radio1"
bind "j" "radio2"
bind "k" "radio3"

Two:
Bind to align smoke grenades. Make sure you set the - value to your original crosshair size

alias -smoke_throw "cl_crosshairsize 5;"
alias +smoke_throw "cl_crosshairsize 9999;"
bind mouse5 +smoke_throw

Three:
Bind throw for grenades. This way they always behave the same way. Beware: tick 64 and tick 128 makes a difference in trajectory.

alias "+jumpthrow" "+attack;+jump;-attack"
alias "-jumpthrow" "-jump"
bind "6" "+jumpthrow"

Four:
This isn't really useful on competitive matches, but it does work on MM if you play it. It will help you to l
ocate the C4 when you hold E.

alias "+use_and_see_bomb_by_pink" "+use; gameinstructor_enable 1"
alias "-use_and_see_bomb_by_pink" "-use; gameinstructor_enable 0"
bind "e" "+use_and_see_bomb_by_pink"

Five:
I don't really use the ingame voice, but when I do, I use caps lock. Ideally you don't want to use something on your mouse that messes your aim, IF you use push to talk.

bind "capslock" "+voicerecord" //usa o caps lock para falar no jogo.


Six:
I study and analyse many demos. It's crucial to have quick accesible buttons to open the demo menu, pause it, slow it down or fast forward.

bind "f8" "demoui"
bind "f9" "demo_timescale 0"
bind "f10" "demo_timescale 0.5"
bind "f11" "demo_timescale 1"
bind "f12" "demo_timescale 6"

Seven:
These binds are from my practice cfg. Some of them are a must, other are just meant to be shortcuts so you don't need to type into the console all the time.
bind "capslock" "noclip"
bind "o" "firstperson"
bind "p" "thirdperson"
bind "F1" "mp_restartgame 1"
bind "F2" "toggle sv_showimpacts"
bind "F3" "toggle sv_infinite_ammo"
bind "F4" "bot_place"
bind "f5" "toggle bot_stop"
bind "F6" "toggle bot_crouch"
bind "F7" "bot_kick"
bind "F8" "demoui"

Eight:
Not that bunny hopping is that useful nowadays, but I do jump using my mouse scroll.

bind "MWHEELDOWN" "+jump" //binda o scroll do mouse para baixo para o pulo
bind "MWHEELUP" "+jump" //binda o scroll do mouse para cima para o pulo

Nine:
These binds are essential. 0.3 is my normal game volume, 0.8 would be my clutch volume. I also have an auxiliary bind to mute the game. You can combine the first two into a single key using an alias.
bind "t" "volume 0.8"
bind "v" "volume 0.3"
bind "n" "volume 0"
in one key:

bind "t" "toggle volume 0.3 0.8"

Ten
You can add a command to clear decals, such as blood marks on wall that makes it harder to spot enemies, to whichever bind you want, for example:

bind 1 "slot1;r_cleardecals"
bind 2 "slot2;r_cleardecals"
bind 3 "slot3;r_cleardecals"
bind q "lastinv;r_cleardecals"
bind ctrl "+duck;r_cleardecals"