Good platforms needs to be competitive in the market again

"needs" is used as a verb to go with singular third person nouns.

"need" is used in other circumstances.

It's a little confusing because for the nouns themselves we add an "s" for plurals, but verbs do the opposite.

One can tell "good platforms" by the fact that they provide value that sometimes is difficult to recognize.

Grammatically this is fine, but the start of the sentence sort of contradicts the end of the sentence so it still sounds a little weird.

That's the reason why some of them have to recursort to methods to "hack your brain" and keep you engaged.

Streaks, as a good example, are a form of gamifying fideliloyalty.

fidelity is a rarely used word in English, and mostly just for things like marriages.

IOn the other hand, what I call "addictive platforms" don't need such tricks.

Novelty and instant reward are their strength; they have no problem keeping people's attention for longs periods of time per day with endless (and often useless) pieces of content.

Just remember that putting in practice with the information is what give results, which is the point of it all.

For each video I watch I'm gonna spend time writing in the comments about the topic, avoiding mindless consumingption.

That's the reason why some of them have to recur (?) to methods to "hack your brain" and keep you engaged.

Not sure what you're trying to say with "recur."

It's like a explicit reward for being an active member of the community (e.g.

IOn the other hand, what I call "addictive platforms" don't need such tricks.

If you have time to spend, do it ion good platforms where you can find insightful and higher quality content.

Just remember that putting into practice the information is what gives results, which is the point of it all.

"putting the information into practice" sounds more natural.