ID of non broadleaf invasive weed
You have hairy bittercress, which is a winter annual weed. It germinates in the fall and produces flowers and seed in early spring.
Removing the weed by hand before it goes to seed is the best way to control it. Then plant grass seed in the bare areas to discourage the weed from developing next year.
Read more about hairy bittercress and the cultural practices that help to manage it.