ORANGE ESSENCE!!!!!! PLEASE!!

So after saving up a couple chests (15) like over a long period im totally f2p so anyway, i unlock em after finally getting enough keys now i get a couple skin shards an emote and some champ shards -_- (as if the bloody champ capsules arnt enough) so i had a thresh legendary skin shard from god knows when sitting on cant use it ok fine ill wait until i get enough orange......Boom vlad legendary few months later, mind you still have not gotten aywhere close to what i need to use the thresh one yet ok fine boom get galio legendary just now.....what am i to do :( ill never EVER get enough orange and the crap skins i could disenchant would not come even CLOSE to getting 1 of those skins to be used so i reroll em and i wont reroll a legendary to end up with a 520 skin HELL NO thats such bs with this system why dont they do something like average off the skins cost and the rerolled cant go lower...for example 2 legndaries and a 975 skin reroll a guaranteed epic THE WORST??? like seriously ill never be able to get the orange i need to unlock the stuf i have from boxes