Student Visa (F1, F2, M1, M2)

Hello every one,
I have a question on my J1 visa rejection. I was working as a teacher under J1 visa from Nov 2013-Jun2018 in USA. I have got J1 waiver before the expiration of j1 in May 2018 to waive the compulsory home country residency for 2 years after expiration of J1. Because I wanted to change my visa to H1b and to work in the USA without returning to India. I was searching for the school county which provides job with h1b, but before that, I have returned to India in Jun 2018 before the expiration of j1 as my family situation had been changed. I did not use the J1 waiver for any reason. My employer in USA said that I need not to stay in India for 2 years based on J1 rule as I have got my waiver. Instead I can come and work in US after one year itself with new J1. As per that I have got a teaching position with the same employer in Jun 2019. My employer sent me the new DS2019. I went for visa interview in Chennai Consulate. Visa got rejected for two times under 214b section in June and July 2019. My question is, Which type of visa application will be advisable in June 2020? J1 with the same employer or different employer (OR) H1b with any agency or direct school district? I want to avoid the risk factors before applying for US Visa in future. Please answer for my question and thanks in advance for your valuable reply.
Thank you