Hello Vicente! Here's my correction for you.

How often do you practice (I'd rather use "do") sports? Please correct it.

Good job! You practice a lot! Way to go!

I usually try to practice do sports every weekend, because it is a good way to keep healthy and practice sports is perfect to change the my bad mood. I like to practice any sports, however I prefer to practice running and basketball. Nowadays, I sometimes practice do sports, because when I don´t have enough time to go with my friends as in my on vacations. Now, I must have to spend more time studying, so I usually don´t spend much time practicing on my favorites sports. When I have enough free time, I like to spend my free time it practicing doing some sports with my nephew. Since, I started this semester only I have only gone to practice two weekends, but I sometimes exorcise exercise in my home. I love practicing doing my favorites sports in the morning, because the air is cool and so I don´t tire very soon quickly,. in tThis time is the perfect way time to practice for any sport.

Note: to say 'practice sports' is ok and not really wrong, but not very native.