despite

[brend10]

Is there anyone to explain me why these sentences are wrong.

Although the fact that it was dangerous, he still did it.

Despite of being easy, many failed the test.

Despite I tried my best, I failed.

and is this one also wrong:

Despite you tried to persuade me to read some of your books, you were never succeeded.

[Shakespeare's brother]

Brend

Although it was dangerous, he still did it.

Despite being easy, many failed the test.

Despite trying my best, I failed.

Despite trying to persuade me to read some of your books, you never succeeded.

[Horsa]

1. Although is a conjuction and is used with two clauses. The order can be either

clause + although + clause
or
although + clause + clause

So in the given sentence -
Although the fact that it was dangerous, he still did it.

although is wrong because it is not followed by a clause but a noun.

2. Despite is a preposition and cannot be followed by 'of'. There is another preposition 'in spite of' which has the same meaning. Despite should also be followed by a noun.

3. 'Despite I tried my best, I failed.' because 'despite' is followed by two clauses and so should be replace with 'although'.

4. 'Despite you tried to persuade me to read some of your books, you were never succeeded. ' Despite is wrong for the same reason as in 3.