8 month old still a handful

She had colic from birth to about 4 months and then she got better during 4-5 months of age. And then she went back to her shitty ways (excuse my language, but she is a little shit). All she does is cry. I have to put her in the living room and run so she doesn’t see me. If she sees me, she screams for me to pick her up. She cries when I surround her with toys, cries when she’s in her bouncer, cries in her high chair. Guys.. idk how much more I can take. I have a 6 and 3 year old I have to take care of too. I feel like I’m losing who I am and barley making it through the day 😭😭😭 please tell me I’m not alone. Any advise?

Side note. We’ve taken her to a chiropractor, a dentist to rule out tongue/lip tie, had everything checked. Nothing is physically wrong with her.