ye dont leave, you can find 2 things in the cave, if you take the path that leads away from the rails everytime you get to eevee, the other 1 is up to you to figure out
well, you are at the correct spot. are you sure you activated the event but talking to that guy in the building?
the only other thing i can think of is the wind, it might be windy? but im really not sure
it has to be raining to start the mudkip event (talk to the guy in the building with all those stairs) but for mudkip to appear it has to be clear weather
for my team i just pick the pokemon i need in the moment ^^ this is my wide selection
lvl52
lvl50
lvl50
lvl50
lvl50
lvl52 shiny
lvl50
lvl50 shiny
lvl51
lvl45
lvl50 shiny
lvl50
lvl50
lvl50
lvl50
lvl51