They look like classic bend bars so usually the bottoms are about level with the ground, in which case you'd need to rotate the levers back quite a bit.
If it's the 105 mech with the long arm, you need quite a bit of tension in the cable to get it to shift.
The rear is short I think, for an 11/28 cassette. They both seem to have quite fine tolerances which for a novice at more than one gear bikes is a challenge!
They look like classic bend bars so usually the bottoms are about level with the ground, in which case you'd need to rotate the levers back quite a bit.
If it's the 105 mech with the long arm, you need quite a bit of tension in the cable to get it to shift.