If you can prove you have purchased a condo valued at 10 million baht or more, and/or part of it in a bank and etc you can apply for a non-b visa and one year extension.
Source number 5 here. https://www.immigration.go.th/en/?page_id=1890
And non-b visa here. https://www.immigration.go.th/wp-content/uploads/2022/02/14.FOR-INVESTMENT-NOT-LESS-THAN-BAHT-10000000-NON-B.pdf