FWIW, I lost faith in "love" too, as in: that fluttery romantic thrill that doesn't last. Except that it did last in a couple of super-hot sexy relationships with narcissists.
I think everyone has something different in mind when they talk about love, so it's hard to say you don't believe in it.
I do think it is possible to find someone you consider awesome, who has the same respect for you, who makes you laugh, who you trust and feel safe with, who "gets" you in ways you never expected to be "got." For me, this is what love it, and it's not a belief so much as something I realise sometimes when I'm running upstairs or emptying the dishwasher, fuck I'm glad I'm with this person and no one else.
Finding that person, of course, is another matter. Took me half a century. I think if you actually found the right person, you wouldn't have any problem sticking with them. It's good that you're not pretending to have found them when you haven't. I think everyone is under a lot of pressure to make do. Keep looking.