Take a short test and find out which of the most important words you need to learn in order to master the basics of the language.
To communicate in a foreign language, you must first learn to do so in your native language. If you can express your thoughts clearly and concisely using your native language, then it will not be difficult for you to do so in any other language.
Many would like to object that there is no need for such studies, because they already know their native language. This is true, but the ability to speak does not mean the ability to express yourself clearly.
Therefore, I will say the following: if you cannot express your thoughts briefly and clearly in your native language, it will not be easy for you to do so in a foreign language.
If you learn 1000 words, you will understand 70% of the daily conversation, 3000 words - already 85%. To explain your needs to others, it is enough to master about 100 words.