The free hextech chest system

So I've been playing for a while now and didn't have a problem with the system until they updated the way you get keys now. I currently have 7 free chests from getting S ranks to put that into prospective that's 7 weeks worth of them, the problem is the key fragment system as someone who plays maybe 1-3 sessions a week it is a real struggle to get key fragments. It will roughly take me 2-3 weeks to get a completed key usually and so the chests have just started outnumbering the amount of keys i'm getting. Does anyone else feel like this is a problem?
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