Writing Feedback / Why we are producing more and more rubbish? Most of the waste are the plastic bags. [6]

I'm not the best at English, but I corrected everything I could. I may have missed a few things.

"... every individual is generating lot of waste material"
Up to you, but I would change the wording in this opening sentence to something like, "There is no doubt that today the waste material humanity is generating cannot be eternally contained

Subsequent paragraphs

... common material which is used by ...

Once they are used, they are often thrown in the garbage which adds to the trash problem.

... they burn the plastic bags

.

As a consequence ...

... introduce the strict policies to ban the plastic bags ...

... an excessive part ...

This issue could be resolved if people only cooked, required food, or they fed the ... food to the beggars, pets, or anything that could eat it.

As a result,

a clear, insurmountable

If we follow these steps and the government introduces policy

Scholarship / Write a reference letter for yourself in the third person describing yourself. Scholarship essay [4]

"He is the only student in his year ..."

Maybe try making this into two sentences?

"Saifuddeen is a beast in our basketball team. He was awarded the most improved player last year, and he truly was."

I would suggest saying something like "certainly deserved the exceptional award" or something along those lines.

Not sure if the word "beast" is appropriate in a scholarship essay

I feel like you're on the right track, but as you said, you probably need better word choice.