भवता गम्यते। This is passive construction where the subject is in instrumental case (तृतीया विभक्ति). भवता is instrumental case of pronoun भवत्. So passive verb of root गम् is used which is गम्यते. If you wish to know more about this, feel free to take Sanskrit Grammar Intermediate Course.
For pronunciations of complex words in Sanskrit, learning from a Sanskrit teacher is the best option. You can get help for pronunciation of Varnamala (alphabets) from YouTube but there is almost no help for video based lessons for pronunciation of Sanskrit words that are big/complex.
If you would like to learn from a personal tutor at Open Pathshala, you can register for Live Class of Sanskrit here - http://openpathshala.com/live-class
This is passive construction where the subject is in instrumental case (तृतीया विभक्ति). भवता is instrumental case of pronoun भवत्. So passive verb of root गम् is used which is गम्यते. If you wish to know more about this, feel free to take Sanskrit Grammar Intermediate Course.
If you would like to learn from a personal tutor at Open Pathshala, you can register for Live Class of Sanskrit here - http://openpathshala.com/live-class