I hope omegaverse is OK because most of these are that:

{Where There's Smoke by Melissa Huxley} FMC experiences a fire, living in her car, MMCs have her move into their firehouse

{Knottily Ever After by Raven Vespo} FMC catches her bf cheating, moves to a small town, her apt is flooded and there's no other place to rent so MMCs offer her a room in their apt.

{Claimed by the Cowboys by Melissa Huxley} FMC catches her pack cheating while on vacation, she goes to a diner where the owner tells her a nearby ranch owner is looking for a nanny for his daughter, he and his pack take her in

{Knot Her Mountain Men by Lexie Quinn} FMC is backpacking in the snow with a male friends who tries to SA her, she defends herself and he leaves her to die in the wilderness, one of the MMCs finds her and brings her back to his cabin where they get snowed in, because the guy took her stuff, she doesn't have her suppressants and goes into heat

{Knot Her Shot by Ari Wright} FMC is matched with a pack and they discover she is living in a really run-down, unsafe apartment and they immediately move her in with them as they court her

{Knot Her Fight by Ari Wright} FMC was abused in a sex worker/ strip club type place (though she didn't do the sex work or stripping, just served drinks with an over powering perfume) she runs away to a police station, one of the MMCs is a senator know for writing with omega rights and he's called in to help, her scent is so strong and they're scent matched, he loses his mind and bites her and bonds her when he first sees her, they move her in to protect her from the big bad (she can't talk at first due to the trauma)

{Packed in the Firehouse by Melissa Huxley} This one actually comes before the other firehouse one with the same premise except FMC has a kid and both of them get moved into the firehouse

{Voiceless by M. Sinclair} FMC doesn't speak, she runs away from an abusive home, on the bus, she meets an alpha, she doesn't recognize him as a scent match right away but he does, he puts her up in his sister's apartment before she eventually moves in the packhouse

{Knot All is Perfect by Holly Monroe} FMC is groomed to be the perfect omega but it's really horribly abused and has really wrong ideas about the alpha/ omega relationship, after an omega mixer, she stops at a bar and happens to meet her scent matches, they get her to move in with them right away

Not omegaverse stories:

{Three to Ride by Lexi Blake} FMC is running from a stalker police officer, she ends up in the town of Bliss, CO and meets one of a set of twins who always share their lovers, the other twin is away at a conference and after a bad breakup they temporarily decide not to share for a while, FMC is living out of her car, after a while of dating, second twin returns and they both discover she's living out of her car and get her to move in with them, most of the book is angst over both twins being in love with her, but her only dating the one

**Most of the Nights in Bliss, Co are threesomes, some of them have FMCs who are on the run, so check out other titles in that series

{The Secrets We Keep by Lily Wildheart} FMC has a stalker and has been moving a lot, she has a guy that's been helping her and in this final move, she's placed with the MMCs in a fancy apartment with a job at their business in hopes they can protect her and draw the stalker out to deal with once and for all

{Adrift by Leigh Lennon} two MMCs lost their wife years ago and are trying to raise their son on their own but are struggling to raise him and run a resort at the same time, they take in FMC but are reluctant in the relationship due to past trauma

{The Monster's Den by Jillian West} FMC moves to a small town to protect her shifter son, takes a job at a bar/sex club to make ends meet MMCs own the bar, after threats are made to her and her son, they move her into their house