Improving your communication skills is essential as a freelancer. Clear, effective communication can significantly impact client satisfaction and your overall success.
We need to be vigilant. Unfortunately, these kinds of scams are not limited to Fiverr; they can occur on any platform where scammers see potential targets.
How much impression and click are you getting?
You may consider to check content of your gig and if prices are campatible to your niche and competitors.
It's not mandatory to check each and every email, especially when you're not expecting one. It's better and safer not to open them if they appear suspicious.
There is almost zero possibility of getting any clients from the forums here. It's better to advertise and showcase your work in the right places.
Though, I do like your design!