Can I replace my old router with a new one?

Sure, I can give you a question-based description based on the paragraph you provided. Here it is: "Hello, I'm considering upgrading my home network and I'm wondering if I can replace my old router with a new one. I've been experiencing some slow speeds and occasional disconnects, so I'm hoping a new router will help improve my connectivity. Can you tell me if this is a feasible option, and if so, what are some things I should consider when choosing a new router? Additionally, will I need to make any changes to my existing network setup or devices to ensure compatibility with the new router? Thank you in advance for your help.