How to add a for to sidebar?

Hello,

I browsed this topic but i haven’t found anything that will answer my question. I found one related answer that suggested to download an additional plugin that will render shortcode in sidebar widget but that plugin is outdated and i won’t install it on my site.

Please advise how i can add my form to sidebar so the form will look nice. I tried to generate an iframe through your “Generate Embed Code for Standalone Forms” feature but it looks offset. Please help.

Thanks