I'm new to speedrunning this game and am having an issue involving yes clip in canals_11. Every time I get it, the game will no longer allow me to change weapons. This carries over to the next maps too so I'm stuck with whatever weapon I entered the no clip state in. Does anyone know what's going on here?

You have to bind every weapons you need.
bind 1 "use weapon_crowbar" (for example)
Here you'll find console names of the weapons: https://wiki.sourceruns.org/wiki/HL2:weapons#Weapon_names

That did it thank you!