Pls help with pet build

Help me create a pet build, I've already developed a little, I can reach the 15k stage, but I don't know what skills to download, what to pay attention to and most importantly, how to choose normal pets to devote more time to them, I haven't entered the game for a long time, they removed the quests for pets and now some kind of game like three in a row, will the quests to which the pets were sent will be returned?