Dear I think you have some confused
Who say the lavearge 1:1000 not good for you account and who linked it with spered
The big lavearge mean big free margin and allowed you to have more losses in one trade before you have margin call
For example if you use lavearge 1:100 and your balance 1000$ and open one trade with 1$ lot per pip the broker will take 100$ margin and that mean you need 900 pip losses to have margin call
But if your lavearge 1:000 and enter trade with 1$ lot per pip broker will take 10$ margin and you need 990 pips losses to have margin call
So high lavearge sure best for you
And other this why you work with big sperad pair you need to work with fixed low sperad pair