You can just buy a very cheap module which does this directly, commonly called HC-06 or HC-05 e.g. https://www.aliexpress.com/item/33010159305.html?spm=a2g0o.p

You can just buy a very cheap module which does this directly, commonly called HC-06 or HC-05 e.g. https://www.aliexpress.com/item/33010159305.html?spm=a2g0o.productlist.main.3.58a9918ebDZ2YA&algo_pvid=f3ba1982-f40f-41d4-b95e-6d3d097c078a&algo_exp_id=f3ba1982-f40f-41d4-b95e-6d3d097c078a-1&pdp_npi=4%40dis%21GBP%211.32%210.92%21%21%211.64%211.14%21%4021038da617315067335777331e2a1b%2110000001211713127%21sea%21UK%210%21ABX&curPageLogUid=CStUcUzXDpB6&utparam-url=scene%3Asearch%7Cquery_from%3A https://www.aliexpress.com/item/33010159305.html?spm=a2g0o.p...