first shroom trip alone

Yeah it's fine, but don't take too much and do it in a safe place. Preferably also get an anti-psych so you can end the trip early if that's available. At least get CBD and dose that if you have anxiety. You'll either calm right down or sleep right through the trip. The problem is that it lowers your high so only use if you need to come down.

If you want to experience higher levels of psychs, test it with nitrous crackers first. They turn a normal trip into a heavy one but only for 3-5 minutes. Good for testing the waters if you don't want to be locked in for 4 hours.

Safe and legal way to get shrooms

Assuming you live in the US, no. But you can get the spores safe and legally, add it a few months of grow time and you have a nice little haul. Of course, depending on what spores you get, the mushrooms themselves would be illegal even if the spores weren't.