I've been playing LoL for a couple of years now. I'm tired of playing with my smurf and I would like to try changing my account, but I do not want to start the game from the first level. I know that there are offers for selling accounts on the forums, but this also does not suit me. Any advice?

I don't think that buying an account through the forum is a good idea, try to find another solution. Can you start pumping other characteristics for your character to change the playing role?

Pumping up the characteristics of the smurf to make a good support from the jungler, for example, will take a lot of time and this will not be the best support for the clan. There are few offers on the sale of smurfs on gaming forums, so it will be difficult to find a really good offer there, but you can look at this League of Legends accounts link and find more. On this site with the help of filters you can select all the characteristics that are important to you and find a cool smurf. After paying for a new account, you can immediately start playing, so this is the fastest way to change your smurf, in my opinion.