Hi @yesilkkkkk
I have an idea to do this, but feels it would be little complex.
in the microsoft list, create a column of date type with name Status modfied which captures the date on which status column is modfied, but keep it as hidden if you don't want it to be visible.. To update the modified date of status column- a power automate flow has to be created which runs when item is modified. see the below flow

So when the status column is updated, update item action will update the Status Modified column with current date.
Now create a recurrance flow/scheduled flow which runs every day and compare the status modified date with current date, if date difference >=7- it will send a reminder email.
Hope this idea helps !