This resounds with me so much that you could’ve written it about me.
We have two little ones who are very head strong and hard work, this stresses us both out and we argue.
Time out for each of us seperately helps and also the very rare times we get to spend together without the kids.
I ride a cargo bike and take them out as much as i can for “me time” and they love it and get to go to the park, balance bikes etc.
Fully agree with molgrips about the stresses of life and kids.
Where are you in the country? Maybe some riding with others or support would help?
I have a very limited support network but the odd chat etc certainly helps (normally just about random crap rather than anything else)