field values

$field_render_array = $entity->{$field_name}->view([
  'type' => 'default_formatter', // Replace with desired formatter type.
  'label' => 'hidden', // If you want to hide the label of the field (optional).
  'settings' => [
    'trim_length' => 100, // Example for textfields: Trim the text to 100 characters.
  ],
]);

// For single value fields.
$entity->field_name->value;

// If you don`t know the main property.
$main_property_name = $entity->field_name->getMainPropertyName();

// For multiple value fields.
$entity->field_name->getValue();