Sound on zoom during meetings

I am not sure if someone can help with this:

The sound during the meetings I attend is now very faint since I purchased a new laptop, despite the fact that on the bottom right hand corner the sound is set at 100%. I also went into my laptop's settings, system, sound, headphones, and this is also set at 100%. Only when using zoom is the sound impaired, i.e. faint, whereas when listening to YouTube directly from the internet with my headphones on, the sound is really good. When I take off the headphone, my laptop allows me as well to hear YouTube very well.

I am not sure what to do any more and I wonder if someone kindly would know the answer.

Thank you

Bland