White cross: intuitively
White corners: intuitively
Second layer;

Left: U' L' U L U F U' F'
Right: U R U' R' U' F' U F

Yellow cross: F R U R' U' F'
Yellow edges: R U R' U R U2 R' U
Permute corners: U R U' L' U R' U' L
Orient corners: R' D' R D

https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-beginners-method/

white cross complete: Algo to flip left + flip forward

R' D' R D R' D' R

Step 4 Details:
https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-beginners-method/step-4-yellow-cross/

Step 5 Details:

https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-beginners-method/step-5-swap-yellow-edges/

Two Opposites: U R U R' U R U2 R' U y2 R U R' U R U2 R' U

Step 6 Details:

https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-beginners-method/step-6-position-yellow-corners/

Step 7 Details:

https://ruwix.com/the-rubiks-cube/how-to-solve-the-rubiks-cube-beginners-method/orient-yellow-corners-how-to-solve-last-layer-corner/