Hello, you can load the model directly. I also imported a language pack without issues.

/* Import TinyMCE */
import tinymce from 'tinymce';

/* Default icons are required for TinyMCE 5.3 or above */
import 'tinymce/icons/default';

/* A theme is also required */
import 'tinymce/themes/silver';

/* Import the skin */
import 'tinymce/skins/ui/oxide/skin.css';

/* Import plugins */
// import 'tinymce/plugins/advlist';
// import 'tinymce/plugins/code';
// import 'tinymce/plugins/emoticons';
// import 'tinymce/plugins/emoticons/js/emojis';
import 'tinymce/plugins/image';
import 'tinymce/plugins/lists';
import 'tinymce/plugins/table';

/* Import premium plugins */
/* NOTE: Download separately and add these to /src/plugins */
/* import './plugins/checklist/plugin'; */
/* import './plugins/powerpaste/plugin'; */
/* import './plugins/powerpaste/js/wordimport'; */

/* Import content css - will be built into css file */
import skinUiCss from 'tinymce/skins/ui/oxide/skin.css';
import contentUiCss from 'tinymce/skins/ui/oxide/content.css';
import contentCss from 'tinymce/skins/content/default/content.css';

import 'tinymce/models/dom';

import './tinymce/langs/fr_FR.js';

window.tinymce = tinymce;

Then on wanted pages I import the script and the css like so (using Laravel helpers but whatever, it works the same without) and I init the editor :

<script src="{{ Vite::asset('resources/js/tinymce.js') }}"></script>
@vite('resources/js/tinymce.css')

<script>
    tinymce.init({
        selector: 'textarea.richEditor',
        menubar: false,
        height : "90%",
        plugins: 'table lists',
        toolbar: 'undo redo | blocks | bold italic | alignleft aligncenter alignright | indent outdent | bullist numlist | table',
        language: 'fr_FR',
        skin: false,
        content_css: false,
    });
</script>