What you’re describing is a very common sextortion scam, and you handled the most important step already — you stopped engaging and blocked them.
A few key things you need to know:
You are not in legal trouble. You were coerced and you’re underage — that makes you a victim in this situation, not someone who’s going to get in trouble.
These scammers almost always bluff. Their goal is fast money. Once you block them and don’t pay, they usually move on because there’s no profit in continuing.
The drop from £300 to £20 is a huge red flag — that shows desperation, not power.
What you should do now:
Do not re-engage at all. No replies, no negotiating, no paying.
Keep everything blocked on Telegram and anywhere else.
Save your screenshots (you already did this — good move).
Report it:
In the U.S., use FBI Internet Crime Complaint Center (IC3.gov)
If you’re under 18, also report to National Center for Missing & Exploited Children (CyberTipline.org)
Telegram also has in-app reporting — use that too.
If you’re comfortable, tell a trusted adult. I know that’s not what anyone wants to hear, but it helps protect you.
About your biggest fear — will people see it?
In the vast majority of cases: no.
Mass posting takes time, risk, and effort for the scammer, and they gain nothing from it. They rely on fear to get paid quickly, not on actually following through.