Help! my WD HDD 1,5 TB can't be recover file

my HDD 1,5 tb had a problem please help there is so many important files , it happen when 24 on february the problem happen when i was watching a movie from my HDD 1,5 then suddenly the movie stop in the middle and my drive cannot remove it safely , it stuck so i restarted windows and it was run very slow just read this

make windows read slowly , my hard drive is H: and J: , i’ve been partition  , please help

ow sorry i happen before 18 february … i forgot the time