I have some doubts regarding articleship, pls reply or my head would explode

1 I cleared in may 25 , till when should I join articleship, maximum time , uske baad Kara to articleship nahi milegi 2 Big 4/ Big 6 / mid-sized Mei Kab tak articleship lagne ka chance Hai, Kitna time ke band Saari vacancy bhar jaati Hai. 3 Maine 1st attempt Mei clear Kia Hai inter , 73% Gaye Hai, Mukhe excel and tally aata Hai, Mai linkedin par hoon, tabhi firm nahi lag rahi , accha cv banana Hai, cold email Kar Rahe, linkedin par message Kar Rahe hoon , tab hi no success , basics referral nahi Hai, can anyone help me , or suggest me some tips , I would be very thank full to you.