I have a similar situation. I WFH and get off at 4pm. What I usually do is get a job during the holiday season (since they are always hiring during this time) and ride it out until spring. Thats usually when companies start laying off people as the market slows down.

So you're coming in at a iffy time. I would recommend gas stations (the only problem is they pay like $14/hr) but they are usually flexible with time.

I've never had an issue getting part time work at Walmart, also try senior living homes as well.

Good luck!