finally fixed it

var belance = document.getElementById('pct_balance').value;
document.getElementById('pct_chance').value = 49.5;
document.getElementById('pct_payout').value = 2;
var ebe = 0.001;
var oldbal = parseFloat(document.getElementById('pct_balance').value);
var f = true;
var target = (belance*50);
var olderest = document.getElementById('pct_balance').value
var old = parseFloat(document.getElementById('pct_balance').value);
var nextbet;
var jim = parseFloat((ebe*9));
var him = parseFloat((ebe*2));
var zim = parseFloat((ebe*6));
var kim = parseFloat((ebe*10));
var j   = true
var wild = document.getElementById('pct_balance').value;
var min =document.getElementById('pct_balance').value;
parseFloat(document.getElementById('pct_bet').value = ebe);
parseFloat(document.getElementById('pct_profit').value = ebe);


function dobet(){
console.clear()
var balance = document.getElementById('pct_balance').value;
var previousbet = document.getElementById('pct_bet').value;
document.getElementById('pct_chance').value = 49.5;
document.getElementById('pct_payout').value = 2;
    if (balance>(oldbal+(ebe*3))) {
       f       = true;
}
 if (balance>=(oldbal+(ebe*6))) {
 nextbet = ebe*2;
}
if (balance<(oldbal-him)) {
    nextbet = ebe*2;
    him     = parseFloat((ebe*2));
    f       = false;
    oldbal  = parseFloat(balance);
}
if (balance>=(old+kim)) {
    nextbet = ebe;
    kim     = parseFloat((ebe*9));
    f       = true;
    him     = parseFloat((ebe*3));
    oldbal  = parseFloat(balance);
    old     = parseFloat(balance);
}
if ((balance>=old)&&(f==false)) {
    nextbet = ebe;
    f       = true;
    kim     = parseFloat((ebe*9));
    him     = parseFloat((ebe*3));
    jim     = parseFloat((ebe*10));
    zim = parseFloat((ebe*5));
    old = parseFloat(balance);
    oldbal = parseFloat(balance);
}
if (balance<=(old-jim)) {
    jim     = parseFloat((ebe*10));
    him     = parseFloat((ebe*3));
    kim     = parseFloat((ebe*9));
    zim     = parseFloat((ebe*5));
    nextbet = ebe;
    f       = true;
    oldbal  = parseFloat(balance);
    old     = parseFloat(balance);
}
if (nextbet==null) {
nextbet = previousbet;
}
if (balance>=target) {
//stop();
return;
}
if (balance>wild) {
wild = parseFloat(balance);
}
if (balance<min) {
min = parseFloat(balance);
}
var freak = ((balance-olderest).toFixed(8));
console.log("balance made");
console.log(freak);
console.log("biggest balance");
console.log(parseFloat(wild));
console.log("lowest balance");
console.log(parseFloat(min));
parseFloat(document.getElementById('pct_bet').value = (((nextbet*2)-nextbet).toFixed(8)));
parseFloat(document.getElementById('pct_profit').value = (((nextbet*2)-nextbet).toFixed(8)))
$('#a_lo').click();
}
setInterval(() => dobet(), 1200);