ok I have 1 gfci in each bathroom and 1 in the kitchen and 1 in the
masterbedroom and 1 in the laundry room.

is this a safe setup or should I go for more of a electrical gfci
electrical breaker for better protection.

also how do you wire 2 gfci in order?

I tried to hook 2 inline for the kitchen countertop recptales near the
sink but only 1 would work and the other wouldn't even though when I
put replace the second gfci with a standard wall plug it works.