Making fake jump animations in 2D top down games Help please

I know this has already been discussed before, but i'm new to unity and coding in general, i just started a month ago and already saw many tutorials on making 2d RPGs. But i can't find any explaining with detail how to make fake jumps through animation. I mean i saw some explanations but i still don't get it. I tried using animator to fake the jump but either my character doesn't move or teleports to other positions while jumping. I know that i need to desactivate the collider2D when the player comes over the obstacle i don't know how to do it either. I'd really appreciate a codeline example for the fake jump or an easy to understand explanation. My objective is to make a jump like in mario & luigi superstar saga.