I can tell you what is Envato Quality team is. It is people that often do mistakes and reject even items that satisfy quality standard required. Sometimes there is no problem at your item at all. It is perfectly unique. And best judge by the quality of your product can only your customers, people that will use your item everyday. Not Envato Quality team who does a lot of mistakes on review of items.
In 2013 they rejected my script item too. Then in 2017, I released that item without any improvements as open source. And according to jqueryscript dot net my plugin was a top 3 in 2017 year, over all jquery scripts that year. Unique features that I implemented into that script and that was useful even in 2017 and not even 1 similar script had them on envato in 2013 here, their quality team or totally ignored or must be even didn’t checked it at all. Or they didn’t recognize it as unique features, because they are not those people who will use this item everyday. They are not customers who perfectly know why your script(item) is better and unique than others.
But you can keep trying. As Baraa-Gh said: “Try it and I am sure you will succeed after that”. But truth is I’m NOT sure that you will succeed after that. As you said by your own: “I will try till I die”. Sounds to me more like a true rather than “you will succeed after that”. Always be prepared for the worst here.