F1 Visa denied for the third time. Very frustrated and sad. Plea

I got my F1 Visa denied for the third time. Very frustrated and sad. Teacher 8 or any expert, can you please give me some advice?
I am a middle-aged full time mom and want to study business admin and management program in a community college in US.  TOEFL score is not high but pass the requirement. Planning to take associate degree first, then transfer to a univeristy to continue  bachelor degree study. Married and have a 12 yr old child. my parents and sister are in US with Green card and citizen. 

VO said I am not a student and don't have strong tie with china. But my son and husband are in China. We have three houses and enough bank deposits in China. My husband is a doctor. We have a better life in China than in US. Why the vo believe I have strong tie with my parents and sister in US than my son and husband in China?

Do I still need to apply for the fourth time? what should i do to let the VO believe me? Is it worth to try another time in October for Spring semester? or if I apply for a better university than a community college? 

I have 10 year B2 visa and went to US visiting my parents for 5 months this year.  Can i still use b2 for next time? can i still hope for my F1 visa in China or i need to go to US with B2 visa and then change to F1 Visa later within US?

I am so desperate. Any info can help. 

Thank you Teacher 8 and other friends here! 

所有跟帖： 

• Reply -863211- ♂ (5068 bytes) () 08/11/2016 postreply 15:09:34

• Thank you so much Teacher 8! one question -handinhand- ♀ (184 bytes) () 08/11/2016 postreply 15:20:06

• Reply -863211- ♂ (705 bytes) () 08/11/2016 postreply 16:41:07

• Thank you Teacher 8! You are the best! -handinhand- ♀ (0 bytes) () 08/11/2016 postreply 16:50:16