Phaser has two very active and friendly forums. One for Phaser 2 and another for Phaser 3. Both are part of the wider HTML5 Game Devs Forum, where you'll find boards covering related topics such as Game Design, Audio and Collabs. Use the forum to ask questions, get support, solicit feedback on your games and find out what other developers are up to!
Register for the forum (using either your email or twitter login)
"Your first ever post to the forum must be approved by a moderator before appearing. After this you can post freely. We do this to make sure you're not an evil spam bot."The Forum Mods