My car is more noisy, is it something to worry about?

My Altima is 10 years old and I am the only owner. Lately it's more noisy like engine noise when I am on high way. I am rather used to it but if I have new passenger, they definitely tell me why is my car that noisy.

I am not sure why is it noisy but lately my car does eat more oil too and now I change oil/filter ahead of schedule because it's almost empty by the schedule time.

This noise I am talking about is like engine noise, the car is just loud.

Could this indicate the car can break down? Should I change anything to fix it?

It's an old car now so I don't want to spend a lot of money on it but should I make it priority to replace it? I was hoping to replace in a year or two otherwise.