I wish I never told anyone I worked or studied tech. Especially older family and friends, because their requests for help are relentless.
A lot of friends are chill with it, and I don’t mind doing a little bit of help, but sometimes people are who are OFFENDED when you don’t want to help. In the same way a contractor friend won’t remodel your home for free, I am not going to fix every single issue you have with your computer for free. I’m happy to give advice, but i’m not going to work for hours without pay to fix everything.
Disconnect everything physically plugged into the router and change the WiFi password.
Add your devices back one at a time until the dropouts start again.
If they start immediately then you’re looking at a modem/router issue (most likely). If they start after adding a device, remove that device and check the network stability again.
When the network drops happen is your modem showing that it’s still connected to your ISP or is the modem in a disconnected state?