I have a Xiaomi Yeelight led strip which works with my 5ghz network but I just received a Yeelight colour bulb (2nd generation) but It has problems connecting and says it is incopatable with my network in the Mi home app and doesn’t even connect at all in the Yeelight app. Why can’t my bulb work with my network like my led strip does??

Are you sure about that? Yeelight never produced led strip could work with 5g Wi-Fi network.

Well it seems to have been working well and I onyl have 5ghz available. Any idea? Does it not need wifi or?..

It does need Wi-Fi, only 2.4G Wi-Fi. Please double check your network, it could never work with 5G.