Need someone assistance in VanilaJs (Javascript)

I try to explain the issue or task for you well: If you have worked around query-selector then you better know we can set a value of an input field using it. But I'm working on a project for Amazon, and it doesn't work here. I mean it put the value but on submit I got the validation error from amazon. Though, I used the selenium that worked because selenium is sending keys that seem real for Amazon. Same behavior on some otherwise like: on the Linkedin website, I tried to put an answer when applying for a job using query-selector but didn't work. Check the attached video.

I can't give you access to an amazon seller account that's why you can develop a solution for LinkedIn if your code works here, then probably it will work on amazon too. You can open LinkedIn profile, and navigate to a job that's asking for additional questions (mandatory) the jobs have prefilled values will work so take the job that is asking for an answer to complete the application. I'll pay with Tip once I got my solution.