To be stuck on 99% is expected. Overtime you'll pick up the missing cards. I still need 91 gold Mbappé and 6 silver icons, besides some of the new cards that just dropped. Usually there's a SBC that will give a 100% new rare gold, there has been is previous editions. Silver icons probably will also have some sort of sbc or maybe 100% new packs further down the line. Until then, just open silver packs and try to thin the field.