Into Google Drive add/upload file from '+ New' button. Then Share file for 'Anyone with the link' and copy link address. Sample Link (For example) https://drive.google.com/file/d/1BjC-suSzCrI09ZhK_DC3O3JDCjL3ZKMT/view?usp=sharing CHANGE LINK as per this "https://drive.google.com/file/d/1BjC-suSzCrI09ZhK_DC3O3JDCjL3ZKMT/preview" and place it into iframe tag's src attribute with these mention attributs width="100%" height="400" allowfullscreen="true" allow="autoplay".
Example:
<iframe src="https://drive.google.com/file/d/1zrgVmkDIofHKnk5cINBspbM76BonCcuY/preview" width="100%" height="400" allowfullscreen="true" allow="autoplay"></iframe>
