Is the creaking noise in my car to be of concern?

I drive a 98' Honda Accord EX. It is the US model and I've had it over a year and done hardly any maintenance on it. It makes a creaking noise sounding more like a groan than a squeak and it occurs when I turn the wheel at low speeds around town and my car also creaks as the suspension reacts to the road surface. Any idea what this might be? I don't know much about cars.

Added (1). It's not the power steering fluid, I already checked it

If I had to guess, which I do because I can't inspect the suspension myself, I'd say you likely have worn out control arm or strut bushings.

The most likely cause is one or more worn out suspension bushings. Not only can they cause the noises you describe but they can make the handling pretty sloppy. The fact it's also occurring when you steer mean the steering rack mounting bushings also need to be inspected. On Hondas it's common to find that if a wishbone bushing has failed then you have to replace the entire wishbone due to the bushing not being a separately replaceable part. The part can be very expensive but there are third-party alternatives at about half the price.

Hondas may be reliable, but they're not maintenance-free. Look after your car and it will look after you.

The first thing to do is to check your power steering fluid level. If it's low you'll hear a kind of growing sound when you turn at low speeds.

Ball joints or sway bar bushings need replacement.

The squeaking noise yo hear when driving over bumps is probably dry or worn suspension bushes. The noise you hear when turning at slow speed is your your CV joints, eventually they will need replacement. Seeing your car is so old you need to decide if it is worth it to replace these parts. If you can put up with the noise your car will keep going for ages