Archers don't need Str to do damage with bows, Dex however helps.
10~20 Str for carrying capacity is totally fine, but 46 Str at level 90 is way too much.
46 Agi also won't really help with anything.
Same with 19 Luk. Luk does provide minor Atk, but with your gears, current stats and level you won't really notice too much of that.
Then there is also your equip: The other Snipers you saw will have way better gears than a Goibne Set, but don't worry about that too much.
Why not worry about gears? Well, once you are Ranger the best way to level is with Arrow Storm.
Arrow Storm gets a huge damage increase from using the White Wing Set.
That set however blocks most gear slots, so basically everything you buy (except headgears) to have it easier to level as Hunter/Sniper are wasted zeny once you are a Ranger with Arrow Storm.
There also is the possibility to level with Traps as a ranger, you will need completely different gears for that though. If you are interested in that you will want to check out this guide here for gear and stat suggestions.
Tl;Dr:
Reset your character's stats at lvl 100 latest to something like the Arrow Storm build here and buy a White Wing Set (Suits, Manteau, Shoes and Brooch, +4 is totally fine for starters) for when you are 100+.
Since you have a Hunter Bow with Hunting Arrows you can use Converters to deal more damage to specific elements, i.e. use a Fire Converter if you fight Stapos as earth mobs take increased damage from fire elemental attacks.