Don’t jump straight to the 5x5. If you can’t solve a 4x4 comfortably, practice that first—the 5x5 uses the same reduction method but with more pieces. Print your Rubik’s Cube 5x5 solution PDF , and aim to solve just the centers in under 5 minutes before moving to edges.
If your last two edges are swapped or incorrectly oriented, use this sequence (where involve turning two layers): Tips for Success rubik cube 5x5 solution pdf
Each "edge" on a 5x5 consists of three pieces (two wings and one mid-edge). Don’t jump straight to the 5x5