Hi Millie Pagan!
It seems that you're not seeing the new Messages app effects when they are sent to you. I can understand why you'd be concerned, and I'm happy to offer some guidance. You may have the Reduce Motion setting enabled in your settings, and this would cause certain effects to be disabled. You can change this setting in Settings > General > Accessibility > Reduce Motion. You can read more information about the new Messages app effects in the following link:
Use message effects with iMessage on your iPhone, iPad, and iPod touch
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Cheers!