im currently lv 120 im playing at 100(hard) and its too easy. do you now any mods or suggestions to make it harder
You're level 120. I doubt that there is anything which will actually "challenge" you, short of something obnoxious like creatures that have effectively infinite health and deal effectively infinite damage. My advice? Roll a new character! Experience the game anew from a different perspective, level different skills, play different factions. If you're out of vanilla content, explore some mods. Take part in a different Great House (if you haven't been a Telvanni before, choose them, and use Rise of House Telvanni alongside Uvirith's Legacy, Building Up Uvirith's Legacy, and Tamriel Rebuilt Maps 1 + 2 ). Keep it fresh.
Really, Morrowind wasn't designed for characters to reach such a level. Vanilla Morrowind content is scaled with level 20 in mind as sort of a soft maximum. By level thirty or so, I doubt that anything in Tribunal or Bloodmoon is going to offer much challenege, either (depending upon your character class and leveling habits, that is). But that's where the best feature of the game kicks in, the replayability! There's always something more to do, and if you ever honestly believe you've finished it all, there are always more mods.
Good luck!