Orders for indicators development - Stocks - new

Make a 10000 plus script trading Expert advisor with detail and make it flawless with no errors no tiny mistakes and make it in mql 5 language. Make it adjustable for it to be able to trade on its own and not be disturbed and make it study the chart and be able to trade any currency pair. I have zero experience and I would just like to copy and paste the code in MetaTrader. Can you make it be compatible with both

// Define the properties input int ShortPeriod = 12; input int LongPeriod = 26; input double LotSize = 0.1; // OnTick function is called every time there is a price update void OnTick() { double shortMA = iMA(NULL, 0, ShortPeriod, 0, MODE_SMA, PRICE_CLOSE, 0); double longMA = iMA(NULL, 0, LongPeriod, 0, MODE_SMA, PRICE_CLOSE, 0); double prevShortMA = iMA(NULL, 0, ShortPeriod, 0, MODE_SMA, PRICE_CLOSE, 1);