Giving in to a controlling person might feel like "keeping the peace" for the moment, but it's actually starting a very toxic pattern. Each time the controlling person gets what they want you to do, that gives them a little more power over you for the next thing they'll want from you. Trust me, this pattern will continue over and over again. You will eventually be worn down and under their control.
Toxic people speak badly about others, are negative, lack compassion, take up way too much of your time, constantly have drama going on, lie to you, criticize you, talk more than they listen, play the victim, lose their temper, have to be right, treat others poorly, are self-obsessed, try to control you, have addiction issues. (Sue Fitzmaurice)