OBS

obs is a streaming software that lets you record your screen and put together multiple elements to make a stream setup but getting it to work right can be tricky

firtsly your going to want to add your output sources display capture to show your screen audio output capture to record your pc's audio and audio input capture to capture your audio from the microphone these are the only thingns you truly need you can also add a scene for starting soon and be right back but those arent super nessecary beyond just being a scene with a image source as a background and perhaps aaudio input source you can set transitions for your scenes to have a more seemless transitionbetween them

once thats done your going to want to set your bitrate to make sure your video qualitys decent and not grainy/blurry because the default obs settings arent well optimised first go to settings then video and make sure base and output resolution are the same then set your fps to either 60 or 30 higher fps's can be too much for a good undemanding bitrate and end up crunching your output quality once youve set those go to the output tab here we can set our bit rate but first change output mode to advanced se your encoders for video you should use h. 264 then go to the recording section i set my video bitrate to 6000 and audio to 160 you can also change the file typope recordings export as here click apply and you should be good to go