Do you want to change the time of the round? The default is not always suitable.
1) After entering the match, you need to open the console. The default key binding for the console is the tilde key (~).
Can't open the console? Look: How to enable and open the console in CS:GO
2) mp_roundtime_defuse 10 - change the round time for De_ cards (cards with a bomb bookmark).
mp_roundtime_hostage 10 - change the round time for Cs_ cards (hostage cards).
mp_roundtime 10 - change the time of the round on the other cards.
3) Other commands
To save settings - mp_restartgame 1
Remove the time before the round - mp_freezetime 0
* Adapted for the latest version of CS:GO.
No installation required.
IF THERE IS A PROBLEM:
Opening it this link, we read it, if necessary - write the name of the mod.