How to allow only paragraph tag in TinyMCE WP?

Question

TinyMCE

Tell me how to remove all tags except <p> in the WP visual editor.

I tried this, but in the end it turns out messy.

add_filter('init', 'tinymce_init');
  function tinymce_init() {
    add_filter( 'mce_external_plugins', 'tinymce_plugin' );
  }
  
  function tinymce_plugin($init) {
    $init['keyup_event'] = ....../event.js';
    return $init;	
  }

And the JS code itself

jQuery(document).ready(function($) {

    tinymce.PluginManager.add('keyup_event', function(editor, url) {
    
        editor.on('keyup', function(e) {
            content = tinymce.activeEditor.getContent({format : 'raw'});

      content = content.replace(/<!--[\s\S]*?--!?>/g, "").replace(/<(?!p)\/?[a-z][^>]*(>|$)/gi, "");
     
     tinymce.activeEditor.setContent(content);
     
        });

    });

});