CS:GO has the Steam workshop with maps dedicated to learning maps. These maps often have Angle Clearing practice where Bots are placed at common angles and players just push through to a site clearing angles.

Valorant has the Practice Range and maybe Deathmatch. Practice Range has the "Spike Defuse" area which is pretty much only useful for getting the general idea of clearing a site (which is what it's meant for) and Deathmatch is just a bunch of people running around kill-searching most of the time. Even then, Practice Range doesn't help you learn map-specific angles and even if you count Deathmatch, you still have to hope you get the map you're trying to learn.

To remedy this issue, I think Custom Games should have a "Place Bot" cheat that places a bot at your crosshair when you hit a keybind. The Bots don't even need AI (though a toggle for the "Spike Defuse" Bot AI would be nice). Just a Bot that gets hit with all the usual (shows when it's blinded, revealed, etc).

In addition to the previously stated, this would help confirm flash lineups solo, help players learn proper crosshair placement on maps, and make lineup showcases much more satisfying (we've all seen someone showoff a lineup, now imagine if you got a visual for how good a Sova arrow / Fade eye is or a kill for a molly lineup.)

That's pretty much all I have to say, if you read this far and didnt just go to the Tl;Dr, you must be a Language Arts teacher or something.

TL;DR Place Bots (with or without "Spike Defuse" AI) in Custom Games so people can practice crosshair placement and angle-clearing flows in actual real-game scenarios.