But I do know people which I would categorise as really terrified of loosing control.
Maybe “letting loose” was the wrong expression here, I meant “loosing control” rather.
For example, the average person will feel altered mood states and mild visual hallucinations (patterns on surfaces, think very detailed mandalas or fractals), in the 50-75μg range of LSD. They will not see pink elephants, they will not try to call their dog on the phone, they will not strip naked, they will not make growling sounds at trees.
Now, I do voluntary work in drug education, and there’s one important thing to say, it’s that everyone’s different, and it’s fine not to do psychedelics, or any other substance.
There are things I can’t control even when sober, that’s clear, but I’m used to it. Giving up the control over things I usually control is a different thing (for me).
Do you have good reason for this fear, like fantasies of hurting yourself or others? If so, yeah, you probably shouldn't ingest substances that can lower your inhibitions.