Server admins are not going to give out op permissions to just anyone. It is usually reserved for higher-ranking staff members only. If you are looking to be a staff member for a Minecraft server (which may entail receiving op), you can apply to servers looking for staff here.
Why do you even need OP ? If it was your own server, sure, but why do you need to be opped? If you need access to certain blocks or commands, i.e. barrier blocks or something, you could just...ask someone who is OP? Nothing really warrants you to need op. Unless you just want to be staff in which case there's easier ways to ask then this kind of super suspicion sounding request.
Speaking as a Server and Game Admin, if you want OP, you have to convince a majority of our admins that you deserve the privilege. You do this by actively participating in the world, helping others, and demonstrating proficiency in a skill we need. It takes time, talent, and trust.
Most servers will make you apply for OP, by doing forum staff applications. If you've just joined a server, I can guarantee that an admin will not be like "Hey, you want free OP." You actually have to be trusted with the staff and owner.
Rollback Post to RevisionRollBack
If a group of mouse is called mice, then is a group of houses called hice?