lower yourself

lower (oneself)

To demean or degrade oneself; to do or say things that will lose the esteem or respect of others. I refuse to lower myself by engaging in a smear campaign just to win an election. I'm proud of your for not lowering yourself to trade insults with that horrid woman.
See also: lower
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

ˈlower yourself (by doing something)

(usually used in negative sentences) behave in a way that makes other people respect you less: I wouldn’t lower myself by working for him.
See also: lower
Farlex Partner Idioms Dictionary © Farlex 2017
See also:
References in classic literature ?
"Don't lower yourself with using coarse language to me , Mr.
you will never lower yourself by making a confession to him?"
Use a rope's end to lower yourself into the water so as to avoid a splash--you know.
Of course, there's a massive safety issue here - you can't just lower yourself onto train tracks and, being no fool, Ashley did first approach station staff.
Clench your butt at the top of the movement, pause, and lower yourself back down.
Lower yourself until your thighs are parallel with the ground, then push back up explosively through your heels.
Lower yourself by bending your knees until they're nearly at a right angle, with your thighs parallel to the floor
Slowly lower yourself back down to the starting position, rolling your spine down from top to the bottom as you do.
Opting for right allows you to post a 27-part Twitter thread explaining that, although you're grateful for your dietary requirements being acknowledged, you're unwilling to lower yourself to eating in Greggs.
With a tempo squat, you begin to lower yourself and slowly move downwards on the count of 4 seconds, holding for 2 seconds and then bringing yourself back up again in 1 second.
Sit on a chair or step, drop your bum off of the edge and lower yourself down and back up again.
Ostrich Walk From the standing position, lower yourself to a touch-toes position.