[Grammar] use of despite

Hi I want to know if this sentence is written correctly: "Despite of there could be some cases of people who might have not being treated nicely, native people are kind to outsiders" This sentence is from a text comparing living in other countries...my question is about the use of despite, should I better say: "Despite the fact there could be....."??
Thanks a lot!

[konungursvia]

"Despite" + [noun phrase], [clause].
Despite their lack of experience, they were good tennis players.

[Diana doll]

why don't say: Despite their lack of experience, they are good tennis players?

or

Despite they are lack of experience, they are good tennis players?

I am so confused about time tense.

[engee30]

Originally Posted by Diana doll

why don't say: Despite their lack of experience, they are good tennis players? It's fine; now you're talking about the situation in the present
Despite their lack of experience, they were good tennis players. talking about the situation in the past.

[Diana doll]

thanks engee30, I got it~~!!