I've been having this issue for about 3 months. The front V-Brakes squeal extremely loud when i fully engage them. This problem randomly started one day when i took my bike for a ride. At first it wasn't that bad, but after a few days it started getting worse and worse. I replaced the brake pads and the issue was still there. The squeal was somewhat loud only when i fully engaged the brakes. I left it like that for about a month and it was getting proggressively worse.
A week ago while i was riding my bike i noticed that the squeal was getting noticeably louder while i was pulling the brake softly. I decided to hit the brakes hard and it was so loud that everyone who was around turned and looked at me. It was SUPER loud. I left it like that for a week and today i decided to try and find a way to fix this issue. I tried adjusting the toe of brake pads like in this website, but with no luck. The squeal didn't change much.
A went for a ride and the squealing was still there and i had no idea how to fix it, but close to the end of my ride, while i was playing with the front brakes, i noticed that the squeal was slowly going away. I hit the brake with like 3/4 of my power and the squeal was not there. It had magically dissapeared! I was super confused at this moment. When i came to a stop at my house, i used the front brakes to slow down and as i was coming down to a low speed, the squealing was progressively coming back up. So at high speed there is barely any squealing, but at very low speed(jogging speed) the squeal is still there(not as loud though).
I am super confused and i have no idea how to fix it! I seriously need help because i am scared that the squealing will fully come back again. I basically have no front brakes because if i use them at low speeds when riding through the town i will scare everyone shitless.
UPDATE: The squealing when braking at high speeds sadly came back.