The squeak when you press the clutch

Hello friends, I noticed today, especially when I was on the road, I noticed in 1st gear. There is such a small squeaking sound. I stopped, while the car was running, I pressed the clutch again, there is a creak coming from under the car, but it is like rubbing the iron like this ..

When the last swing was changing, the gearbox oil was spilled, adding 80 to 90 oil. I wanted to say I don't know if it is related.

What is the problem? I searched for a little bit on the internet and opened the hood and called wd40 frequently there.

When the car is stationed, it does not come, but when it comes, it is not excessive.

I have the same event in my car, when I press the clutch and release the pedal, then the squeak comes, as if there is a gap, I applied the wd40 on the pedal but not much has changed