The conditionals are not very tricky, but they surely need a lot -A LOT!- of practice. Here is a web page with plenty of exercises:
https://www.perfect-english-grammar.com/conditional-exercises.html
It also has very good explanations if you need them. Remember when to use the different conditionals:
If you heat ice, it melts.
If I eat too much, I get sick.
If you listen to the teacher, you will learn a lot.
If you study for the exam, you won't have any problem.
If I met the Queen of England, I would be very nervous.
If I won the lottery, I would buy a palace in Thailand.
If I had taken a taxi, I would have been there on time.
If I hadn't been so nervous, I wouldn't have behaved the way I did.
GOOD LUCK!