Dear Aspirant,

Physics Wallah aka Alakh Pandey is quite famous amongst JEE aspirants because of his amazing teaching skills. However, that doesn't  compel everyone to like his methods / teaching. Every individual is different and has different taste, therefore it is difficult to enforce any answer as such.

This being said, it is DEFINITELY TRUE, that a lot of candidates have cleared JEE Mains just by following Physics Wallah, so to answer your question...

Yes, JEE Mains can be cracked by Physics Wallah provided you are comfortable with his teaching style.

Last but not the least, my advice to you on this will be, before making any assumptions, go through his videos, understand if you are in synch with them (i.e. if those videos appeal to you) and if the answer is yes, then you can go for it, you'd definitely clear Mains.

All the best.