To diagnose and troubleshoot a slow internet connection, there are several steps you should consider:

1. Check your internet speed – using a reliable running speed test ensures you have a baseline to work from and can eliminate other potential sources of slowdown.
2. Set up and configure your router properly – an incorrectly set up router can cause speed and connection issues.
3. Block unneeded websites and restrict background applications – running too many programs in the background can reduce your internet speed.
4. Connect directly to your modem – if you’re connecting to the internet through your router, try connecting directly to your modem instead.
5. Check your modem and router – make sure hardware is functioning properly, such as rebooting them and double-checking the cables.