@Ahmad_Hlawa
I agree with @Pstork1 in the sense that when you design a Sharepoint based trigger flow ("when an item is created" etc) it is not possible to have a single flow handling several sharepoint lists.
However, if your flow has a recurrence trigger (executed daily, weekly, etc) or a manual trigger, I believe you can have a single flow running for more than one sharepoint list. In such a case, I would suggest to do the following:
1-initialize an array variable
2-add it the sharepoint list names you need
3- add an "apply to each" with the array variable as input
4- inside this "apply to each" add the stuff you want to replicate ( "get items" , "filter array", "apply to each" and "send an email"). Please note that as "List Name" input for "SP get items" you need to select "Enter a custom value" at the end of the drop-down list, and add "Current Item" as Dynamic Content.
In te following screenshot you will see I built an array with two of the SP List names from my SP site

Hope this helps