been living alone for 4 years now (im 22), the strongest advices i can give you, is keep really close to your money for the first few month so you know exactly what goes where (gas,rent, food) everything, i used to hold an excel for the first 6-7 months, now it's natural and i know exactly what i can and can't do, and how much i save
money wise,
now moving wise, i would say be patient when looking for a place, have detailed needs and wants, because in the long term, the needs you wont get, will get annoying, for exemple i had an appartment whitout balcony even tho i needed one, and man corona lockdown was hard whitout one, so in this new one it was a necessity
if the flat or house you're visiting doesn't tick all your boxes, you will most certainly find better by waiting a bit more, even if it's a month, i say be patient.
now i don't know your whole work/family situation, but mentally wise, the first month are very hard in an empty house, so keep distracted a lot if you can, sport gym work family /friends, because that's a huge step and when loneliness gets to you, it's weird af.
might forget some, here are some things i hope someone would have said to me when i got my first flat, enjoy