Mushoku Tensei: How i tried my best in my second life

Well, before i get to the synopsis i’ll make a few things clear. English isn’t my main language, so if there are some kind readers who notice errors in my wording please tell me. I chose to make a fanfiction because it is easier to use an already existing universe. This novel is my first one and I don’t want for it to become a harem collector or breaking the original work. As for the original work it belongs to its author. Updates will be slow. The prologue can be ignored in case you don’t care about what the main character went through in his previous life on earth. Synopsis: The main character reincarnated into the universe of Mushoku Tensei, how will he live in this second life ? What will he achieve ? Will he be able to change for the better like Rudy did ?