Help me Iphone 16 pro max.

On my iPhone 16 Pro Max, notification sounds and system sounds are very low. For example, when I get a "like" on Facebook, it sounds very quiet, and it's the same for most apps. I'm not sure what’s going on; do iPhones generally have lower sound or is there something wrong with my device? Note: I recently switched from Android and still have my Samsung Galaxy Note 20. The Note 20's speaker is much louder, and even WhatsApp voice messages sound louder when played through the speaker. Also, WhatsApp messages arrive first on the Samsung, even though both phones are connected to the same Wi-Fi network. Is this a problem with my unit, or is this normal for iPhones?