NB! It seems this console command is not compatible with CS2.
Command Profile

MAPCYCLEDISABLED

CS:GO

If you set this command to 1 (default 0), the same map will be replayed at the end of each game (instead of moving to the next map in the map pool).

Syntax
mapcycledisabled [0 / 1]

Description

If you set this command to 1 (default 0), the same map will be replayed at the end of each game (instead of moving to the next map in the map pool).

Syntax And Arguments

mapcycledisabled [0 / 1]
0 / 1 Enter 0 to not disable map cycling, and have more than one map (default). Enter 1 to disable map cycling and make it so that the same map is restarted at the end of each game.