I ask to myself what people that don't even play with othell rogue come on this topic to spam or to farm posts... well, whatever.
For any othell, you need keep in ur mind:
STR = P.atk, skill reuse/chance of reset skills (example: more clones), skills dmg and critical dmg.
DEX = Evasion, attack speed, half kills, Critical skills (what really cause lol dmg). In light set users (othell, yul) influence your moviment speed too.
Once you are a begginer and the basic dyes remove your status(no money for legendary lvl 5 ones), if u put STR will remove your dex also (example: STR legendary lvl 1= +3 str - 1 dex), my advice is: give more importance to your dex (since u will lose some con just) and put some str.
Like 2x dex and 1x str.