Wist you if you can connect a wireless router to a PC / laptop as a wireless connection between mobile / tablet only for the offline connection as Ethernet?

Because on my laptop is the function Mobile hotspot failed because he does not want to send the IP so I want to connect a wireless router via LAN, anyone knows if it works and could also say how it works I have planned for the router 50 euro if someone gave me one Router can recommend I need it for a lichtprogram on the computer that I can use the remote funntion I ask for quick help I'm looking forward to answering

I wired my router with 3 PCs and have 3 smartphones. The advantage of a cable is that you do not have to enter a password again and again. Only sometimes, when the internet connection gets very slow, I turn off the phones because they need some of the bandwidth to update apps