The website eslyes has a page with 365 very short stories. Each one takes only a few minutes to read. You can also listen to each story (in normal or slower speed). After you read and listen to the story, there are several exercises you can try.
Here’s some more detail:
To listen in slow speed you need to press the speaker button to the right of the title.
The number after each title in the list is the reading difficulty. A higher number means it’s more difficult to read
Here is a list of the 100 most frequently used English words. About half of everything you read in English will be these 100 words! Do you know all of them? If you don’t you can learn about them with the Learners Dictionary.
If you would like more, here is a list of the 1000 most frequently used words: