Some online tools to improve your english

• Understanding collocations is important to sound natural. They are words usually found together in sentences. Look up the words that you are trying to use and see how they mix together.
  https://m.freecollocation.com/
  
• Using idioms from your native language translated to english might feel odd for the reader. You can improve on this by searching for the concept of what you are trying to say.
  https://www.theidioms.com/
• This site can provide many examples of a given word within youtube videos. This can also help you with collocations and listening.
  https://youglish.com/
• Irregular verbs can be problematic. You can use a tool to see all of the conjugations at once.
  https://conjugator.reverso.net/conjugation-english.html
• If you are not sure about the use of a word you can try using sites with example sentences.
  https://tatoeba.org/en/
  https://www.macmillandictionary.com/live/example-sentences.html
• When you find a new word you can search it in this site to hear a recording of it.
  https://forvo.com/
• Minimal pairs are pairs of words that only differ in one sound. It can be frustrating and it takes time but it's possible to improve. A bit of daily training can help you identify problems and train your ear.
  https://quizlet.com/162977322/minimal-pairs-flash-cards/
• Simple English Wikipedia (and the Regular English Wikipedia) can help you if you are trying to write about a topic but struggle to find the correct words.
  https://simple.wikipedia.org/wiki/Wikipedia