Yes.

In fact, she focused on turning herself into the perfect king, and several magic artefacts that came into her possession aided her in attaining that state. A king who was just, merciful and not easily angered, even to those who were rude to her. A king who purely acted on the interests of the kingdom, and never for herself.

She became someone who didn't understand the hearts of her people, and they, hers. Humans, of course, have a tendency to be uncomfortable with what or who they don't understand. Eventually, discontent began to spread amongst the ranks, culminating after many a year into the rebellion that was the Battle of Camlann.

[He'd warned her of this before she drew Camlann from the Stone, even showed her the fate that awaited her on that last battlefield. He still remembered how Artoria smiled as she accepted that outcome, believing that she could carry that burden for as long as she could save Britain.

Her grief atop that hill after slaying Mordred, before Bedivere found her, couldn't be more different.]