Question

Прошу проверить текст на наличие ошибок. И некоторые слова, которые не очень подходят или не похожи на начальный уровень, просьб

а заменить на более простые и примитивные.

This summer I went to Lake Balkhash. Weather was very hot and solar. Water was warm. I went with the friends. We bathed and played beach volleyball. Fried meat in the evening and ate a water-melon. We were there three days.
But for the third day weather strongly deteriorated. There was a cold wind and the rain dripped. To bathe it was cold and we walked on the coast. At night in the lake the moon was reflected. It was very beautiful.

Answer 1

This summer I went to Lake Balkhash. The weather was very hot and sunny. The water was warm. I went with my friends(а куда??). We bathed and played beach volleyball. In the evening we ate fried meat  and  a water-melon . We were three days there.But for the third day weather strongly deteriorated. There was a cold wind and rain. We couldn't swim, because it was cold and we walked on the coast. At night  the moon was reflected in the lake. It was very beautiful.