My blinkers in the front on both sides don't work with my brake lights

What can I do about it my back brake lights don't work or my blinkers in the front or back don't work

I cannot imagine that they would be on the same circuit. BUT, the front blinkers definitely would work off a relay probably in the fuse box. Found what the relay looks like ( google) and go in and replace it. I had 3 on my truck and the owners manual told me nothing about it so I had to just start pulling out relays until I got to the one for that circuit instead of trying to read the diagrams on fuse covers. save a TON of time.