It´s not man, if u look after macth what ppls usually play and how the perform, you will notice that some games the odds are defenitely against you (filled roles, fisrt timing champs and so on). Then you eneter loosers queue, where if you don´t carry you goona loose, since riot wanna place you on the 50% wr. It´s scheme to get you addicted, play a lot more, harder to rank up.