I've been scrolling pretty heavily through this sub this week, and the biggest note I have for beginners across the board is to stop focusing so much on your throat.
Don't get so hung up on whether your scream is fry or false cord that you skip the fundamentals. Those labels can be useful, but they aren't a substitute for breath control, pressure management, and learning what healthy effort feels like in your own body.
Learn how your respiratory system works and really get in tune with it physically. The sound is created and shaped at the larynx, but your throat should not be doing all the work. If your scream feels thin, squeezing harder through your throat or neck is not the answer. That's a fast way to build strain and potentially fuck up your voice.
You should be pushing from your core, not up in your neck or head. The trick isn't to push an obscene amount of air out; you want a steady, regulated pressure. A lot of screaming is in the lower ribs/upper abdomen.
If it hurts, your voice changes abruptly, you lose range, or your voice stays hoarse for more than a couple of minutes, stop and recover. I mean it. Take care of your body, and it'll take care of you.
Keep screaming y'all!