I'm sorry to hear of your experience but because quality of content is subjective and it depends on how people see it. Although there seems to be some basic requirement for a post to be considered quality by most. And that includes the length of post, the quality of photos attached or citing sources if they are not your own something like that.
Don't be afraid to try again :) Find a community where you feel at home or comfortable, observe how they do things, then apply things you see are good.
Your patience and guidance is invaluable to me.
Read the sample post where my efforts were destroyed Am I bad?
https://ecency.com/hive-177682/@myintmo.shweyi/family-trip-in-december-garden
https://ecency.com/hive-124452/@myintmo.shweyi/colorful-flowers-in-december-garden
But I will continue. Thanks.
Those posts you shared are okay, but they are very short and may also need to improve formatting. I learned before that we should have at least 300 words when we create a post (excluding translations). Maybe that is the reason why they got downvoted.
And yes, continue to create content. Improve the format, make the post longer.