For trade AIR.DE the loss was double because broker offer fractional trading facility but don't offer also limit order for quantity bellow 1 unit. This is the reason I decided to skip for some period stocks and etfs. I will search for a broker that offer fractional stocks trading but the trade is conducted as a CFD not 1:1 Leverage. I also increased the minimum lower time frame from 3 Day interval for FX and from 2W interval for stocks and etfs.