Hi @Susanna1 and thanks for sharing your feedback with us!
We usually don’t allow users to post several feedback on one thread as it quickly become confusing for other users and make it difficult for us to follow-up on.
Please note that we don’t offer to opt out of new updates, I’ve outlined the reason why we don’t offer this in the following post: Introducing our new Spreadsheet-Inspired List View! - #82
Our team is already working on implementing an option to resize columns, I will post an update in the announcement as soon as it becomes live for all users.