Answer Description
Because this is an intermittent issue, the problem likely lies with the wireless signal due to a problem with interference, channel settings, or the antenna itself.
Wikipedia
Wi-Fi () is a family of wireless network protocols, based on the IEEE 80211 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves These are the most widely used computer networks in the world, used globally in home and small office networks to link desktop and laptop computers, tablet computers, smartphones, smart TVs, printers, and smart speakers together and to a wireless router to connect them to the Internet, and in wireless access points in public places like coffee shops, hotels, libraries and airports to provide the public Internet access for mobile devices
Wi-Fi - Wikipedia, the free encyclopedia