WFH is killing my work/life balance not helping it

Been remote for 2 years now and honestly it's been a disaster. Everyone thinks oh you're home so you can help with the kids more, but really I'm just doing both jobs at the same time. Kids interrupt Zoom calls, wife thinks I can drop everything to handle stuff, and I find myself working til 9pm just to get actual work done after being "on dad duty" all day. How do you guys draw the line? I feel like I'm failing at both.