MacBook stays connected to wifi but loses internet connection

Every few minutes my internet connection drops on my MacBook Pro 15" Mid-2015, running macOS Catalina 10.15.5. It stays connected to wifi, at least it indicates as such in the menu bar and System Preferences. However, I can't use the internet again until turning off and on wifi. Also, I can't connect to my router's webpage itself (normally http://192.168.1.1/ is my router's config pages) when this issue happens. However, from the terminal ping continues to work, for my router's IP and for names like google.com. This issue breaks: Safari.app, Discord.app, wget, curl, dig, Firefox Developer Edition.app, Chrome.app, Folx.app, Mail.app, .... almost everything internet-related I can think of testing except ping. ping times don't even increase while the rest of the internet "drops". This doesn't happen on any other device in the house. How can I stay connected to the internet all the time without having to worry about needing to reconnect like this? --------- My MacBook, like all other devices the problem _doesn't_ happen on, gets its IP address using DHCP. While the wifi is working: While I can't connect to the internet: > According to support.apple.com/kb/SP719, your Mac supports "802.11ac Wi‑Fi wireless networking; IEEE 802.11a/b/g/n compatible", is the wireless router configured accordingly? I'm not sure how to check... but I found on one page of my router's settings "Generic MAC80211 802.11bgn (radio0)" this text.