From my own experience, I can say that I can earn almost 40-60% profit in trading based on month trading. It already proved for me that I had earned that amount almost 4 months and still I am involved with trading and this bullish market helped me a lot to make it more. Please use your own brain with others signals which you followed or maybe followed.
Earning 40-60% is gigantic considering you were not lucky and actually had the tools and brain to earn that profit within a month. You can easily double your money within 2 months and in a few years that number might be big enough to blow our minds, so make sure you are actually earning that much or is it just a feeling that you can earn that much. I often feel like I could have earned millions had I purchased Bitcoins in 2011 but that didn't happen.
I would never recommend following any signals from anyone and surprised you are saying that because you seem like a decent trader earning 40% ROI on the capital.