Hi, good attempts.
With all that sky in the back, the exposure will not be right unless you use Spot metering or manual. As you can see, the whites are bleaching a little.
For manual, expose off grass. If subject is in sun, use grass in the sun. Shade for shade.
Grass is the colour version of the Kodak Grey Card, the 18% grey that all averaging meter systems aim for.

If you can’t see grass, buy a grey card (They used to be expensive…mine in 15 years old!!). Or, a perfect white sheet…that will be 5 stops too high (At 100ASA), but the white method is nowhere near as good as the grass or grey card.
HTH.