English is a language. There are many ways to get you to 75, but the score in the exam does not fully represent your level. You should be clear about this. Don't blindly want to go abroad. If you don't think clearly about how many obstacles and difficulties you will encounter after going abroad, now you can imagine that your surrounding environment will become English. Can you adapt? I didn't get all the answers when I went abroad to take the TOEFL, but I came out in English.
Finally, back to your question, if the economic strength is relatively strong, the easiest way is to take more exams and the score will come up. I know a candidate who took the TOEFL test eight times, but he just passed the TOEFL test from over 70 100. . . In repeated exams, you can find the rule of doing the questions. This rule is applicable to any exam, as long as it reaches 75, you can deduct a lot of points for each part. It is not difficult to meet the requirements. Look at the online predictions before the exam, and you will be lucky if you meet them. Even if it's not exactly the same, as long as it's half the same, it's almost the same to take it yourself. . . But this is a quick way and is not recommended. It's better to aim at yourself if you can't. Sign up for a TOEFL basic class first, follow the teacher and try again when you get home.
After all, your question is too vague, and it is not good to give you any specific suggestions to improve your strength except opportunistic methods. Even hawkers can bargain with foreigners. How can you not get 75 points in a year? If you can't arrive, you can only say that your desire is not strong enough.