Frankly, you won't know. Only Allah will know since it is He who has All Knowledge. And no, it doesn't mean we stop making dua, it just means we keep having faith and continue with out dua, even if we never get it, while at the same time, we accept that we may not get what we want in this world, but we will get better than it in the Hereafter.
Also, I'm a brother, and we are all sinners. Allah created us imperfect and if we never sinned and repented and sought His forgiveness, He would have replaced us with those that would. There will always be hiccups and you should never despair when they happen for if you do, that means you don't have enough faith and hope in Allah, the most Merciful and Most Kind. Allah is so kind that when you commit a sin, the Angel on your left shoulder, who records your sin, lifts the pen and doesn't record it for 6 hours. If in that time you regret committing the sin and repent - seeking Allah's forgiveness, the sin isn't recorded, and if you don't, it gets written down as one sin.
Allah is even more Merciful than that. This is just a tiny example of His Mercy, so don't ever despair. The reason you feel unenthusiastic about Ramadan is probably because you aren't as close to Allah as you should be (I speak from experience) and that you really need to distance yourself from sinning and start doing Dhikir and start learning about Islam. It doesn't have to happen overnight, but you should at least start by reading a few ayahs of the Quran every day, or watch some good Islamic videos on YouTube. Life is a Journey to the Hereafter, it takes time for us to get better, just be patient and take it one step at a time. Even if you committed major sins, there is always hope if you recognize that you did wrong and you need to change. For now, do you best to stop committing the bigger sins and slowly work to lessen the smaller ones. As time goes by, and you sincerely make the effort, you will find that things will get better.
Start doing more good deeds, such as reading the Quran or learning about the Prophets(Alayhum AsSalam) and Sahaba. removing a stone from the road that might hurt someone or cause an accident, feed someone who cant afford food, donate to charity (one of the best things you can do) and do anything you can with the goal of seeking Allah's pleasure. Remember that this world is temporary and even if things don't go the way you want them to, it is okay since none of us are taking anything with us when we die except the deeds we have committed.