Just a little FYI here but just in case you were going to look for both, Mizzteq and MTQcapture are the same person (Mizzteq being her character's name, and MTQcapture her channel's name). I also watch her guides before going into savage/extreme content.
And it's totally ok to go blind, especially as a DPS. Healers and tanks have a bit more responsibility in knowing mechanics, but even then in normal mode no one really cares