Possible to make a software based receiver for wireless Keybord´s and mouse´s?

Is there a possibility to make wireless mouse's and keyboard's useable again without the receiver dongle? In most cases I saw it is just a Bluetooth receiver, so my assumption is that if my PC has Bluetooth already I only need a kind of software. And in cases when WiFi 2,4GHz is used, I could use my WiFi card, or am I wrong? Is it, if my assumptions are wrong, possible to use a esp32 or asp8266 instead of the dongle? If there is a possibility to use the hardware although the dongle is missed, that would avoid a lot of trash.

Question by pMan on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.