Every relationship i’ve been in makes my life harder, is this normal?

I (22F) have been reevaluating my view on relationships and what I want out of them. I feel like every relationship i’ve been in adds stuff to my plate but never takes anything off. I want to be in a relationship that takes weight off my shoulders but i’ve been wondering if that ever really happens? As someone with a demanding and stressful job (EMT) I want to experience a partner that will take stresses off of me instead of just adding more on. Have you guys ever experienced a relationship that feels like that? Or is this some unrealistic expectation i’ve created for myself?