User blog comment:IzumiSama/why do i have such bad luck scouting/@comment-25689453-20150725070927

How long have you been playing? In my early days, I also start with only 3 drawn SRs. It took me 3 months to get my 4th SR, which is an event SR, and at least 5 months from the day I started playing to get my 4th Scouted SR.

Chances of SRs and URs are made small so you won't run out of inventory spaces early on in the game. Believe me, a few more months of playing and scouting, and you too will eventually ran out of inventory spaces due to the amount of SRs or URs you would already have ;) Just have faith in the card and yourself, and keep pushing forward. Never give up, and never lose faith. The patient ones will be rewarded as they say ~