DislikedIs it possible to build my own EA that can be profitable, or is it risky?Ignored
The correct question would be... Is your trading strategy profitable.. ??
If your strategy is profitable, then obviously the EA which will work on that strategy will also make money.
So yes it is possible to build your own profitable EA.
There are many tools which can help you to create your EA even if you have no coding knowledge. Everything depends on how complex is your trading strategy. A complex strategy will require you to have some coding knowledge to create EA for it.