When a group chat repeatedly includes porn, make a clear request and decide what you will do if the pattern continues. You do not need to describe your own history to justify wanting a conversation without explicit material.
Start with the particular group causing the problem. Your family chat, sports team, and work messages may each need different arrangements.
Make the request easy to understand
A short message is usually enough: “Please don't send me explicit images or videos.” In a group, you might say, “I want to stay for the football plans, but I don't want porn posted here.” Avoid turning the request into a debate about everyone else's beliefs.
You can message an administrator privately if that feels more appropriate. State what content you want excluded and what would make the group usable for you. There is no need to provide examples by forwarding the material again.
Decide your next step beforehand
A boundary needs an action you control. If the posts continue, you might stop checking the group, leave it, or ask one person to send essential plans separately. Muting alone may not solve the problem if you later open the same content in a long catch-up session.
Exact controls differ between services. Check the current help for the app you use before relying on a setting. For the broader pattern of opening apps without a purpose, review the social media guide.
Keep support separate from public disclosure
If someone asks why you care, a simple “It isn't content I want to receive” is sufficient. You can share more with a person you trust, but the group does not need access to your private goals or progress.
If you want a friend to support the change, make that a separate conversation. The accountability partner guide explains how to agree on a limited, respectful role.
Preserve the relationships you value
Leaving a chat does not have to end every friendship connected to it. Suggest a direct conversation, a different group for practical arrangements, or meeting in person where appropriate. Decide which relationships feel respectful after you state the boundary.
If losing the group leaves a gap in your day, use the connection plan to arrange another source of company. Choose a next contact before leaving, when possible. The aim is a workable communication arrangement, not a public argument or a demand that friends monitor your behavior.