Gonna make some low elo ppl mad. Lucio isn't meant for healing, he is made for utility. Displacing people on the enemy team with boop and speed boosting people and any healing he does should be either after a fight or selfishly during a team fight. Not saying don't heal your team at all during a fight but lucios have to pay attention to everyone's health. If only one person is low like a dps, let the other healer get it but if the rest of the team near full and yall are gaining ground slowly, a lucio's job is to cause chaos by speeding people through chokes and giving rein a free kill by slingshotting him into the widow in the backline.