If you plan to try and sell here then this is a very important point - it’s not just about the code being good.
Approval depends on market suitability, potential sales, the competition, the value that an item offers buyers, the code, the design, execution, product experience eg documentation/presentation etc.
Add to this that envato are by a long long way the biggest and busiest marketplace around, these broader factors become increasingly relevant.
Simply for clarity - envato get (literally) thousands of submissions monthly, the majority of which are rejected.
It’s impossible to police the volume of submissions or files already for sale when envato do not own any of them, so inevitably some poorer quality items will get through on occasions, or some existing items may have bugs or need updating,
It’s also impossible to have definitive standards for creative production or development making subjectivity unavoidable.
However reviewers are not chosen lightly and will always be both experts in their field and have extensive knowledge and experience with the marketplace so ensure that they can make the most informed judgement.
I get that rejection is frustrating (we do sell items as part of another author team), although the vast vast majority of the time the reviewers decisions are right for one reason or cause or another weather that be due to code, features, completion or otherwise.
Without seeing your demos it’s impossible to advise on the potential cause of solutions, but again, if you do continue to try and sell here then these forums and several of the people who spend a great deal of time offering advice is a valuable asset.
In the meantime - there’s really no chance of the reviewers rejecting items with the intention of them then resubmitting. If an item is rejected then there’s no point even if (they wouldn’t) wanted to.