I watch 90 day fiancé, there I learnand listen to informal conversations and English in different accents. I watch 90 day fiancé, and listen to informal conversations and English in different accents.

I corrected this to give an idea of something more casual

And lately, I have followed their fights ion other social media. And lately, I have followed their fights on other social media.

And lately, I have followed their fights inthrough other social media. lately, I have followed their fights through other social media.

using with or through is grammatically correct here. Also general rule is to not start a sentence with and or because :)

I am going to write my answer with informal English, it is my goal, I don't wan. My goal is not to be perfect but understandable. I am going to write my answer with informal English. My goal is not to be perfect but understandable.

I watch different reality shows, principalmainly in English. I watch different reality shows, mainly in English.

principally sounds formal

I watch different reality shows, principalmostly in English. I watch different reality shows, mostly in English.

principally is ok but incredibly format, using mainly, mostly, or usually would all work as a substitute

I feel that with my English level, I've unlocked a new universe of gossip, hahaha. I feel that with my English level, I've unlocked a new universe of gossip, hahaha.

Also, it shows different stereotypes about many cultures, and it is interesting to watch how Colombian people seem toare seen by North American eyes. Also, it shows different stereotypes about many cultures, and it is interesting to watch how Colombian people are seen by North Americans.

just another option that flows a bit better

It isn't not the only reality show that I watch, I like Makeup or Cooking competitions. It isn't the only reality show that I watch, I like Makeup or Cooking competitions.

It isn't not the only reality show that I watch, I like Makeup or Cooking competitions. It isn't the only reality show that I watch, I like Makeup or Cooking competitions.

And also, they show the Colombian gastronomy and I can learn new tips tofor cooking. And also, they show the Colombian gastronomy and I can learn new tips for cooking.

And also, they show the Colombian gastronomy and. I can learn new tips to cook. And also, they show the Colombian gastronomy. I can learn new tips to cook.