It's probably normal with age, but if you have a mechanical hard drive, which it looks like from the laptop model, it could be starting to fail, as a decent amount of hard drives die in ~5 years. If you notice any unusual sounds coming from your drive, like scratching or catching, that could be a sign.

If it is just slow with normal usage, just do a few quick things like running the disk cleaner or drive defragmenting software built into windows.

hope it helps