However i want the First LED to always be on.
Then you don't need an Arduino pin for it. Just wire it direct to 5V (with a series resistor of course).
Your code is already rather long and laborious. It's about to get 4 times worse because you now need to repeat it almost identically 3 more times.
You need to learn to use arrays and for() loops. You can keep your analog pin numbers in an array. You can keep your led pin numbers in another array, a 2-dimensional one. And you can keep your threshold values in yet another array.
Also I spotted an error in your code:
if(fsrread =0){
In C, "=" and "==" do different things. One assigns, one compares.