Hi,
I thought I should contribute to making GrapheneOS better, so instead of just forgetting it and being lazy, I decided to write this feedback-post.
So the good news is, I installed GrapheneOS already back in March or April.
The very small installation "problem" was, if I remember correctly, that when I clicked on "Unlock Bootloader", when I was using the web installer, it instantly told me "done" or something like that although I haven't confirmed anything on my phone yet. It would be better if the web installer said something like "Now please confirm the unlocking on your phone" or something like that and only after I confirmed it on my phone, the web installer should give the message "done" or whatever it was.
Noobies and people whose first language is not English, could be a little confused or maybe even just go to the next step without confirming the unlocking of the bootloader on the phone. But I don't know if there is even a chance of bricking it or something like that, because fortunately I used my brain on that day and just confirmed the unlocking of the bootloader on my phone although the web installer already said that I was already "done" or something like that.
I was using Ubuntu 22.04, everything updated, and the Brave browser, but not the snap package. I installed the Brave browser like I was told on this website: https://brave.com/linux/ - the Release Channel Installation.
Maybe this very small "problem" doesn't exist anymore, because it was months ago. But just wanted to let you know.