I'd say get a book like Play Winning Chess by Seirawan.
https://www.amazon.com/Play-Winning-Chess-Yasser-Seirawan/dp/1857443314
That will cover all the basics. Also play games with long time controls and do your best to check whether your intended move is safe before playing it (and whether your opponent's last move gave you something for free).
That'll give you the foundation of knowledge and skill.
I have 'played' chess all my life, but only recently taken a greater interest in it and have actively started studying. I feel quite overwhelmed and hover between 450 and 500.
I am not quite sure how to improve my chess. It feels like it would be a bit silly to get a tutor at this point, but I feel like I would have some guidance rather than practicing poorly. Perfect practice make perfect.
Could you advise if getting a tutor would be helpful, or if there is a different strategy that I should take?
Thank you in advance for any help.