Follow below step to create a new table in Magento 2 Database.

1. Create a new file InstallSchema.php,  in your existing module -> Setup folder.
2. Paste the following code in this new file.

<?php 
namespace VenderModulenameSetup;
 
use MagentoFrameworkSetupInstallSchemaInterface;
use MagentoFrameworkSetupModuleContextInterface;
use MagentoFrameworkSetupSchemaSetupInterface;
 
class InstallSchema implements InstallSchemaInterface
{
 
    public function install(
        SchemaSetupInterface $setup,
        ModuleContextInterface $context
    ) {
 
        $tableobj = $setup->getConnection()->newTable($setup->getTable('contact_info'));
 
        $tableobj->addColumn(
            'entity_id',
            MagentoFrameworkDBDdlTable::TYPE_INTEGER,
            null,
            ['identity' => true,'nullable' => false,'primary' => true,'unsigned' => true,],
            'Entity ID'
        );
 
        $tableobj->addColumn(
            'first_name',
            MagentoFrameworkDBDdlTable::TYPE_TEXT,
            50,
            [],
            'first_name'
        );

        $tableobj->addColumn(
            'last_name',
            MagentoFrameworkDBDdlTable::TYPE_TEXT,
            50,
            [],
            'last_name'
        );
 
        $tableobj->addColumn(
            'phone',
            MagentoFrameworkDBDdlTable::TYPE_TEXT,
            15,
            [],
            'phone'
        );
 
        $tableobj->addColumn(
            'email',
            MagentoFrameworkDBDdlTable::TYPE_TEXT,
            50,
            [],
            'email'
        );
 
        $setup->getConnection()->createTable($tableobj);
    }
}