Form 8b. Wish/ If only sentences

For practicing:
https://www.perfect-english-grammar.com/wish-exercise-1.html;
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-5529.php;
http://usefulenglish.ru/grammar/subjunctive-mood-exercise-three;
http://www.esl-lounge.com/student/grammar/4g7-wishes-and-regrets.php;
https://www.test-english.com/grammar-points/b1-b2/wishes-regrets/.