What would be the internal and external analysis for this case study?

Do we have to use SWOT or PESTEL analysis by any chace or we have to use any other analysis?

Mr. Kriengsak Lertpittayapoom is the owner of Chug Yont Engineering Co., Ltd (CYE), a smallsized family business located in , Thailand. Although CYE experienced some early financial struggles, Mr. Lertpittayapoom led CYE in the right direction by diversifying its products from food packaging machineries to commercial and residential metal construction. Because of CYE's steady financial performance, Mr. Lertpittayapoom has turned much of his attention to engaging in corporate citizenship and providing financial and non-financial assistance to local educational institutions, hospitals, and Buddhist temples because of his Buddhist values. Unfortunately, Mr. Lertpittayapoom's kindness and care for others has resulted in several business-related challenges, such as the absence of leadership at work and personnel issues. To find resolutions for the challenges without interrupting his continuous desire to provide for the community, Mr. Lertpittayapoom has turned to his son-in-law, a business management professor, for guidance