Looking for advice on logs

[Faliteren]

Want any help I can get as I'm not entirely sure what to improve other than possibly minimize movement. I complain a lot about legends but I don't think they would help that much and feel my gear is pretty optimized as well as correct opener and shattering frostbolts when possible. The DI fight I parsed well but take Harjatan for example where the parse wasn't too high even though I held orb for when adds spawn in addition to normal rotation for procs. I since changed up my gear to try and add in 2 t19 and 4 t20 and did some mythic now but still not looking great.

Logs:
just DI: https://www.warcraftlogs.com/reports/H9 ... amage-done
rest: https://www.warcraftlogs.com/reports/Vj ... ne&fight=2
mythic attempts: https://www.warcraftlogs.com/reports/1M ... e&fight=16

Armory:
https://worldofwarcraft.com/en-us/chara ... /faliteren

Thanks