If you have access to riot points, you could achieve a lot with it given that you will be doing yourself a favour by utilizing all of the additional resources that are only made available to paying customers. Now, the question is, would you be paying for riot points or is there a way that you could get them for free. The answer would depend upon what you would like to do as an individual. You will have to decide whether you would like to pay for these things or whether you would like to benefit from freely available codes which you could use to your advantage. There are several things that you are going to have to consider, and this includes how important your gaming hobby is for you together with what it is that you could like to do to get free LOL RP.
To make life easier for yourself, you could refer to the internet where people may be giving away free riot points either without any conditions or with some form of a restriction being imposed. You may find people getting them for free as a one off thing or getting access to free riot points for as long as they wish.