Hi @nn2t 
, welcome to the forums! Sorry to hear you can’t implement a form for your site.
Can you please give this support guide a read?
If you still can’t get unstuck can you please share your site name along with the steps you have taken to implement the forms and the specific issue you have? This is likely an issue with your code not Netlify but perhaps other members may be able to help once more information is provided! 