Hello all

Sometimes I notice that it is a mistake to use a personal pronoun "
I" after an adjective (please, see my last example) but I can´t not find any rule saying why and when (after which words - if there are any specific) I should not use it.
On the other hand there are plenty of similar structures where it is perfectly ok to use a personal pronoun - please see my examples with
hope and
proud.
I am proud (that)
I know you. (I am proud to know you) Both are possible
I hope
I will meet him there (I hope to meet him there) Both are possible
However:
I am excited
I will play against Hewitt.
(I am excited
to play against Hewitt - only this is the correct way to say it)
I don´t think that it is important to distinguish whether there is an adjective or a verb before the personal pronoun.....or is it?
Will be really grateful for any help
Thank you