Some fighters prefer to walk down their opponent while throwing kicks of their own. Conor McGregor is famously known for doing that, he pressures his opponents with kicks until he corners them against the cage.
An effective counter to this strategy is catching your opponent’s roundhouse kick as Muay Thai fighters do.
Once you catch your opponent’s kick, the odds reverse in your favor and your opponent remains at your mercy. Once you have their leg under your armpit, you can literally do anything to them, you can do a sweep and take them down, counter with a punch using your free arm, etc.