You asked if humans will further develop and if evolution is still going on...
Well, of course it is. Will we at some point become "super humans". Who knows, maybe, if we don't die out before then. If humans die out, and life on earth continues, there is no reason to assume that evolution will select the smartest creature to take over after us, either. Simply the best adapted to the conditions as they then will be strongest, that is the one who will be the strongest. Maybe a planet of cockroaches?
Perhaps it is worth saying that it is OK not to have all the answers. Nobody does.
It is also worth saying that some questions are more relevant than others. We will be all long dead before humans disappear from the planet, one way of the other.
We can't change the past. We can't control the future, either. The only thing we can exercise some degree of control over is that split second, that knife edge between the "back then" and the "not yet", the present. And yet we like to spend a great deal of our mental energy on the past or the future, maybe too much?
Nobody can tell you want you should believe. Your choice. You had a lot of good advice, in particular, it is very important to examine beliefs you hold. This site is rather good for that...
However, one thing you will not find here: Someone telling you what you should believe, a new kind of prophet or something. You can check you own ideas with people from a whole host of backgrounds and experiences, but at the end of the day you must judge for yourself. In doing so, there will invariably be some who disagree with your judgement, but that is fine too. After all, you are you.
If you want to test out Islam further, this is an excellent place for that, you will find other Muslims here, as well as ex-Muslims. Also there are people from other religious traditions, Christians, Jewish, Hindu and others, and a fair number of agnostics and atheists. You can imagine that in such a mix there are many areas of disagreement, but all of strive to find the answers with the help of all the others. Because of this mix, you can be pretty sure, that most issues will get multiple viewpoints. This is good because it will help to produce a fair picture.
Anyway, that was my little welcome to you... All the best and good luck!