@YhoungHemil I don’t work for Netlify, (nor even host with them), so can’t really answer questions regarding the capabilities of their different deployment methods.
One thing I do know though is that they consider ‘Drag & Drop’ to be the “least-desirable and least-capable upload method”, so you should always use another method to ‘Create deploys’ if you can.
Netlify are unlikely to fix any shortcomings or issues that you encounter with ‘Drag & Drop’.
Note that Netlify’s systems are case sensitive too, your Netlify.toml should be netlify.toml