Anyways, if you want to just do a simple if statement instead as that works for you, then do it like as shown in these previous posts here and you shouldn’t need to use the additional text field either.
https://www.wix.com/corvid/forum/community-discussion/solved-collapse-only-empty-text-fields-for-repeater-items
https://www.wix.com/corvid/forum/community-discussion/if-else-collapse-for-repeater-items