refunds

i would just like to know why we can only have 3 refunds. you give them to us so early in the game that some people waste their refunds on 450 ip champs i think it would be better to have a refund system where if you played at least x amount of games that month you would get a refund. also on the same sorta topic why does the refund history go only so far back i would love for it to have your whole history. and finally i would like to ask to PLEASE have a try it before you buy it for champions because i bought and at the start of my journey and would have liked it if i could at least have a single game with them before i purchased these useless champs (no-offence riven mains) well i hope some1 responds goodbye