I have this problem with wifi, my phone is “connected” but there’s no data moving. When I toggle wifi on off, I get for example 10 whatsapp messages at the same time.
A laptop wifi connected drops off wifi all the time, make participating in video calls difficult, so I resorted to using cable connection and bought a 20m cable for that.
More recently I added another wifi router to the network which I use for 2,4 band only, and changed the connect box to use only 2,4Ghz (disabled 5GHz) also. No more (or at least a lot less) wifi connection dropouts.
I’m not sure if it was using only 2.4 or the shared load with additional wifi router that made the wifi behave better, but if used as its specs allowed it was garbage and constant source of additional it support load to me as the resident IT support of our family of 5.
We have a lot of wifi devices, 5-6 phones, 3-4 tablets so the traffic can be extensive sometimes, the box should still handle that, now some of the devices can’t use the faster AC wifi which come only with 5Ghz.