For practicing REPORTED STATEMENTS:
https://www.englisch-hilfen.de/en/exercises/reported_speech/statements.htm;
https://www.englisch-hilfen.de/en/exercises/reported_speech/statements2.htm;
https://www.englisch-hilfen.de/en/exercises/reported_speech/sentences.htm;
https://www.perfect-english-grammar.com/reported-speech-exercise-12.html;
https://www.ego4u.com/en/cram-up/grammar/reported-speech/exercises?05;
For practicing REPORTED QUESTIONS:
https://www.englisch-hilfen.de/en/exercises/reported_speech/questions.htm;
https://www.englisch-hilfen.de/en/exercises/reported_speech/questions2.htm;
For practicing COMMANDS - affirmative sentences:
https://www.englisch-hilfen.de/en/exercises/reported_speech/commands.htm;
For practicing COMMANDS - negations:
https://www.englisch-hilfen.de/en/exercises/reported_speech/commands_negations.htm;
MIXED EXERCISES:
https://www.ego4u.com/en/cram-up/grammar/reported-speech/exercises?10;
https://www.perfect-english-grammar.com/reported-speech-exercise-4.html;
https://www.perfect-english-grammar.com/reported-speech-exercise-5.html;
https://www.english-grammar.at/online_exercises/reported-speech/reported-speech1.htm;
QUIZ:
Upper level
https://test-english.com/grammar-points/b1/reported-speech-indirect-speech/3/
Basic level
https://test-english.com/grammar-points/b1/reported-speech-indirect-speech/2/
Satisfactory level
https://test-english.com/grammar-points/b1/reported-speech-indirect-speech/