Nearing my breaking point

I just don’t know what to do anymore, my daughter (10mths) is a nightmare and I’m running out of steam. I work from home and take care of her full time which I’m finding overwhelming. Unfortunately, I don’t really have any help as everyone close works and Daycare isn’t an option (none accepting right now, plus I’ve never been able to pump so feeding would be an issue). She’s just so fussy all the time, I know she’s teething, but it seems so much worse and it’s been going on for Months. She throws tantrums when I don’t do what she wants; screams, cries, kicks, scratches, arches her back. She’s never been happy playing on her own, she needs your attention constantly, and her new thing is walking while you hold her hands (she wants to do this 24/7 and throws a fit when you try to stop). Getting her to nap is a whole other kind of hell. I guess I just needs words of support/encouragement since I feel like I’m losing my sanity. Hopefully this stage won’t last forever 😞