As a fan of Galatasaray, I am not for purchasrecruiting so expensive a foreign footballer.

(1) "Purchasing" can be dehumanising when used in the context of human beings and is not a very appropriate word to use here.
(2) Alternatively: "As a fan of Galatasaray, I am not for recruiting such an expensive foreign footballer."

Teams in Turkey should invest in local talents in an effort to improve the national team and to increase the popularity of the Turkish League popularity inaround the world.

I think "the popularity of the Turkish League" sounds more natural than "Turkish League popularity", even though it's more words.

A match of any teams inny low-ranking match in the Premier League, or Serie A which struggle at bottom line are moreis more popular among peopularle than Galatasaray or other big teams' match among peoples.

(1) I rephrased and restructured the sentence so that it sounds clearer and more natural.
(2) "Match" (at the start of the sentence) is singular, so it should be "is more popular" and not "are more popular".

Therefore, Turkish football authorities have to think on this matter.

"Think on" is fine, but "think about" might be more common.

The more their revenue raises, the morebetter quality their teams havcan be.

(1) "Raise" is a verb that requires someone to perform the action. It is not suitable here.
(2) Note that I used "rises" and not "rise", because "revenue" is singular.
(3) The comma is optional.