Does muscle have to burn to grow? (health and medicine, sports, muscle building)

For a short time now, my muscles have stopped burning during training, regardless of whether it’s chest, stomach, biceps, etc. However, I pay attention to proper execution and breathing. does that mean that my muscles won’t grow any more if I continue like this Oo ?? I know that the muscle gets used to the training or a load following a certain time and, as I said, I train properly until I can no longer manage clean repetitions. I need urgent help!!!