I first learned about lovingkindness / Metta meditation from the @TenPercentHappier podcast and the teacher @SharonSalzbergVideo . These are Ms. Salzberg’s specific phrases: May you be safe. May you be happy. May you be healthy. May you live with ease. You can replace these phrases you find more meaningful, but it’s hard to improve on them.
That said, when you actually sit to meditate, listen to the phrases that arise. Maybe they’ll suit you better.
Remember, you can find a meditation timer and some simple meditation music / nature sounds at https://dailyflow.yoga/music.