"Jogo de futebol [1] Colombia vs Chile

Amanha Colombia vou vai jogar contra o Chile, eu acho que va a [2] ser um jogo muito duro. Chile é o campeao do da America. O Chile é uma selecao muito forte e o jogo é no Chile (mais duro). Eu acho que, talvez, a Colombia vou vai se igualar amanha com Chile. talvez, Eu estou loco louco por achar isso. [3] Amanha também joga Brazil contra Argentina, o clásico!!! Eu vou a assitir [4] a [5] isso essa partido partida, porque vou vai estar ser muito emocionante."

[1] - You could try to use two dots. E.g.: "Jogo de Futebol: Colômbia vs Chile"

[2] - There is no mistake here, for you preferred to use the present subjunctive. However, in Brazil, it will be also possible for you to see people "forgetting" the usage of subjunctive. So you may also see: "eu acho que vai ser um jogo muito duro". The preposition "a" usually is also removed when we talk about the Brazilian Portuguese. 

[3] - It is better just say: "Eu estou louco por isso!". I guess you wished to say it for: "I am really willing that Colombia surpass Chile during that match!". (This was a big phrase, but only for explain the Semantic notion that you may wish share.). 

[4] - I don't know Spanish, but it seems that you used this "a" because it seems there is a way in Spanish that people say: "Voy a trabajar" (I will work - Vou trabalhar). In Portuguese, at least where I live (Brazil), we just use "vou trabalhar", I don't remember people saying here: "Eu vou a trabalhar". 

[5] - The verb "assistir", when you take the Semantic notion of "watch (see) and hear something...", it needs preposition. E.g.: "Assistir ao show" (Watch {to} the show). The preposition {to} is there only to cause the impression of what would be a literal translation. 

You made some mistakes with the verbal form of "ir", misusing the third person singular "vai", for the first person singular "vou", in the present tense of affirmative mood. This verb (ir) is not easy, for it is irregular and varies its forms. Then is normal this difficulty. But try to memorize some forms of it, since it is a very common verb and is also used like auxiliary verb. You are doing nice, keep studying and practicing and don't fear these "mistakes", it is really important and rich for the learning process. 

I hope these humble corrections help you. :)