Amen to that
Its like the maps are all flat fields with no cover from arrows. If done right mounted archers could just be just a class used to harass rather then kill in 2 hits.
You see mongols as a force that just destroys all in its path.
It was not.
Yes mongols were good horse archers but one of those factors is because they grew up in the harsh conditions and were trained from birth in horse archery and used this to their advantage.
In europe you typically would raise an army, get farmers and train them on how to use a sword and formation training. There are exceptions for knights and lords but armies were mostly not as experienced.
Another factor to take in account is that mongols made most of their kills in the retreat of armies and take them in open plains. This is persistent kingdoms u don't have flat land going to the horizon.
Infantry with heavy archer support is the key like u said. That is in a way how Richard the Lionheart's beat saladin at the Battle of Arsuf. Facing his army to the coast he would prevent archers to shoot in the back of his army and when saladins army got confident they charged and got too close, where then archers and crossbows would rain fire upon the horse archers.
Horse archers also had a shorter ranger then crossbow and regular foot archers because of the thinner bows