Sum All Odd Fibonacci Numbers pair program

JavaScript
1

Tell us what’s happening:
Is there a way to talk this through with someone? I know my code is chunky but works for all but the last test. Curious to try to work it through with someone.

Your code so far


function sumFibs(num) {
  let arrFib = [1,1]
  let addArray =[]
  
  for(let i = 1; num > arrFib[0] ; i++){
    arrFib.unshift(arrFib[0] + arrFib[1])
  }

  let slicedUp = arrFib.slice(1).sort()
  
  for(let j = 0 ; j <= slicedUp.length; j++){
    if(slicedUp[j]%2){
        addArray = [...addArray,slicedUp[j]]
    }
  }

  return addArray.reduce((a,b) =>{
   return (a + b)
  });
}

sumFibs(75024);

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Link to the challenge: