Hey Manuel!

Your English is great.  There are a few changes you could make to sound more like a native speaker:

Imagine you have a neighbor with a noisy dog. Could I say? "Hello, I'm here to complain about a dog of yours (Imagine he has several dogs)".   

I would say "Hello, I'm one of your neighbors.  I'm not sure if you realize this, but one of your dogs has been quite loud lately."  Or something similar - might sound polite! 

I like cycling, running, swimming and many other individual sports.  

I would like you to arrive at home on Saturday.

Are you trying to ask someone to come back on Saturday, or ask them to be at their home on Saturday?  If you are telling them to come home, I'd say "I would like you to come home on Saturday".  If you are asking them to be at home on Saturday, I'd say "I would like for you to be home on Saturday." 

Someone have to make an apology or Someone have to do an apology.

"Someone has to make an apology" or "Someone needs to apologize"

(I would probably say apologize, but they are both correct."
 

Hope that helps!