Counterspell to block the spells when they are cast,
Dispel Magic to remove the spells when they are affecting a target, or to remove an individual spell effect that exists in the environment,
Freedom of Movement to remove pretty much all control effects on a single target and immunise them against those effects for a long duration.
On top of these, any effort to break the concentration of the caster will also generally end the effect, and many spells have easy ways for the affected creature, or an ally, to remove them manually (sleep lets an ally wake the target with an action, and Entangle lets and ally use their action to free you, just as two quick low level examples).
As well as this, virtually every control or status spell offers an initial save, AND a save-by-turn, so that each round the victim can attempt to save out of the effect (usually at the end of their turn, no action required).
Control spells are easy enough to end and the means of doing so are more than well developed already - they do not need to be made even weaker.
