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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Download the original subs from here. Don't download the auto-translated subs, they often have missing pieces. Translate them with this site or this. Add the subs to Youtube with either Dualsub or Add Subtitles. Or just download the video to watch it with the subtitles.
No problem, glad I could help! Good to know all that time I spent on trying out different tools was not wasted. On that note, this is my most used browser add-on at the moment. Maybe it's useful for you too. It uses Google Translate to translate text passages or pages but is better on keeping the formatting and works on sites GT doesn't. You can e.g. translate entire Twitter threads without having to click/tap on every single Tweet and use keyboard shortcuts to toggle between languages.