Step 6 Match Yellow Cross with Edge Piece
Insert the Edges to complete the First Layer
Step 6 Result should be:
Possible 3 Scenario
Scenario 1: Only 1 Edge Matches the Side
Turn the top layer until you have only one edge that matches the side
Eg: Below only the Red Side is matching other sides are not matching.
Perform (R U Ri U R U U Ri)x2
Scenario 2: 2 Adjacent Edges are Matching the Side
Turn the Top Layer till it match only 1 side. Then Do Scenario 1 (R U Ri U R U U Ri)x2
Eg: Below Red and Green Adjacent Sides are Matching, Do a Ui to reach the Scenario 1 (Where only Blue Side is Matching)
Perform Ui
Scenario 3: 2 Opposite Edges are Matching
Perform (R U Ri U R U U Ri) to reach Scenario 2