Practicing alone

Everytime you run QuakeWorld, there's the option to play by yourself, practice movement or aim, alone or against bots.

Bots
Bots replace human players. You can spawn bots in compatible KTX servers. See more Playing with bots.

But also offline. See below.

Deathmatch
Team deathmatch, FFA

Offline
You can also play with bots offline.

https://drive.google.com/file/d/1iD2NsNZNQcK_ERqpMzklAC4lV1VTh4is/view

pop the folder in your main Quake directory, boot up the game and use the following:
 * /gamedir ktxbots
 * /sv_progtype 1
 * /map povdmm4

Aim
Endif povdmm4

versus Monsters
see Bloodfest.