gym issues, not getting coins

pokemon gets knocked out of gym and I dont get anything from it? feel like iv wasted my time putting them in gyms now...... and what is the deal with it unfavorating my pokemon after i put them in a gym?!?! ... i would still love to be able to add people i know as friends and see them on my map with my buddy im walking, the map is too lonely... plus if you could have friends you could do some trading and that would be awesome

drusilla.d about Pokémon GO, v1.39.0