need help for third eye

i usually meditate to 10 to 20 min and i listen 40hz ,369hz ,etc not everyday and i practice semenretention and i sometimes get an accurate guess , and i get vivid dreams and sometimes seen dead ones in dreams, sleep paralysis and i,ve tried candle flame meditation to awake third eye but i have fear of seeing ghost as some youtubers says its dangerous ,wht sould i do?