Clutch or gear oil

I push in the clutch and it starts just fine it will go between gears with no issue but when I go to release the clutch nothing the car stays running but won't move if I press the gas it revs up it started on the highway I was in fifth and I started to lose speed I made it home a good 35 miles after issue started, but it wasn't the easiest thing to do. I had to switch gears with gas down and could not come to a complete stop it was basically over. The car been sitting since. I have had people look at it and nobody for sure gives me an answer, but some say clutch others say clutch master cylinder. Somebody else says I probably just need gear oil. I'm not the best when it comes to cars. I'm learning as I go. All the help will be greatly appreciated.

I watched the video and first off I never knew that it took that much work to fix a car let alone only one part of a car. Not only am I new in the world of fixing cars but I don't get all the tools I would need for this advanced work. I'm stuck in a jam because I just checked the gear oil good not low. Master cylinder good. So what the clutch and I can't fix the clutch with what little knowledge I have. So shop they want way too much money. So what do I do junk this baby? I can't do that because some of the parts I got on there I got from my friend who passed away last month (RIP Bobby). So any ideas how to get this fixed without losing an arm and a leg?