Keep looking on this forum. You've got a lot deeper to go down the hole, but you'll have to search for things. Tiktok and Insta have flooded the zone so lots of things are not so open as before, but it's all still around.
Two resources I think are OK to mention here are StairwayToGrey and Peppys. If you look around you'll find links to forums, discords, and telegrams. Some of them will be old or broken. Some will still work and take you deeper. Read the arguments on whether to filter or not, microdosing with pens, which vendor had a quality/delivery failure (lately?), who's shilling, and who's a jerk >:^D .
This is something old I found here when I quickly searched here:
Hi Everyone, I just learned about GLP1s and peptides in March and started researching, ordering, and experimenting none stop since then. Thousands of dollars later and a mini fridge full of various viles, I am all in. I'm stacking, cycling, and reconstituting like a fiend. This is my new...
glp1forum.com