Why you shouldn’t learn phrasal verbs?
Because, phrasal verbs are not that frequent, not that common.
One of the most important things about learning a foreign language is something called Defining vocabulary
- Defining vocabulary is the set of words that has been used to write all the definitions in a particular dictionary (Cambridge dictionary definition)
- A restricted list of high-frequency words which can be used for producing simple definitions of any word in the dictionary (Wikipedia)
And when we say dictionary we mean monolingual learner’s dictionaries. All major English learner’s dictionaries use defining vocabulary:
Macmillan Dictionary makes "every definition as clear and easy to understand as possible. To achieve this, we write the definitions using a special defining vocabulary of just 2,500 words. These are among the most frequent words in the English language, and they are words that all students of English become familiar with in the first year or two of their studies."
What about phrases and phrasal verbs?
"We use only the ones listed here: for example, the list includes a few simple phrasal verbs like put on and take off (for talking about clothes), and a few simple phrases like in order to and pay attention. If they are not listed, we do not use them."
Macmillan Dictionary lists about 25 phrasal verbs (here)
In all fairness, Oxford Learner’s dictionary gives a different number.
Instead of 2,500, Oxford Learner’s Dictionary has a list of the 3,000 most important words to learn in English.
How many of those 3,000 words are phrasal verbs?
Oxford Dictionary lists about 365 phrasal verbs (here)
Don’t get me wrong, phrasal verbs are important, but not your priority. You need phrasal verbs primarily for language tests.
You don't need phrasal verbs to sound like native. English is a global language and the vast majority of those using it are non-native speakers, and the truth of the matter is that non-native speakers rarely use phrasal verbs.
You shouldn't learn phrasal verbs from vocabulary lists on YouTube. You should learn phrasal verbs like any other word - based on frequency and through Reading and Listening to interesting content and using monolingual dictionaries.
Nobody has ever learned a foreign language watching YouTube videos of people giving them lists of words.