It doesn't recognize work days correctly

Why can’t we have an a option to pick and correct if a day is work day or off day ?

I’m pretty sure it doesn’t work.

I work from Mondays to Thursdays, I’ve to wake up at max 7:45am when I work.

I don’t get that chart because too many dots for “week”, and there are more if I select 14 days and such.

But point is, all blue dots that are past 8am are wrongly labeled, if I woke up that late I wasn’t working.