大家好！ I wanna know if this sentences are properly written

我起得很晚因为我没有课

我没知道不知道你喜欢什么衣服，所以我买得了很多衣服

Thanks for reading!

Hi there，I think the first sentence is correct in grammar and we Chinese can definitely understand it, but it just sounds like being told by a foreigner, so you might like to say it in this way: 因为没课所以我起得很晚or没课我就起得晚。That would be better， more colloquial. Hope it helps!

大家好！ I wanna know if this sentences are properly written

我起得很晚因为我没有课。

我没不知道你喜欢什么衣服，所以我买得了很多款式的衣服。

Thanks for reading!

大家好！ I wanna know if this sentences are properly written

我起得很晚因为我没有课 --> 起的晚因为没课

我没知道你喜欢什么衣服，所以我买得很多衣服 --> 不知道你喜欢什么衣服，所以我买了很多。

Thanks for reading!