Why am I charged a service charge?

Good day! I'm curious to know why I'm being charged a service charge for my cryptocurrency transactions. I understand that there are fees associated with most financial transactions, but I'm interested in understanding the specifics behind this particular charge. Could you please explain what the service charge covers and why it's necessary? Is there any way to reduce or avoid this fee in the future? I'm always looking to save money and optimize my financial transactions, so I appreciate any insight you can provide. Thank you in advance for your help!