Final table strategy please help!

i really need help regarding final table strategy.
over the last week ive made pretty much made the final table of every tourny i played in(5 10K and 5 7.5K)but havent won any of them.
it seems to me that my game lacks something big after getting to the final table.
i dont know what specifically is wrong with my game but for example i made the 10K final table last night as chip lead only to go out at 5th place.
i don’t know how i should be playing for example a deep stack in final table or an average stack.im much more comfortable with a small stack and i dont mind if i bust with a small stack.
things like should i be playing tight and passive with a big stack and let the field narrow down somewhat or shall i be stealing more and raising more and play more active?
is there any book/source/post where i could read up general final table strategy because its really frustrating now and i know that im not getting bad beats and the reason why i bust out is because of bad play.
i would really appreciate any help.