Cap'n Kobold
Hero
No, seems about right for most players of martial types.If a level 5 fighter, even one defensively specced like that one presumably is, is only doing 9 DPR they need help.
Why are they only +3 in stat? Level 5 and not even a +1 weapon? No weapon mastery? What combat style? Not to mention all the other potential damage boosters that stack on weapon damage and which a cantrip generally lacks.
+3 bonus fits: Start with a 14 + 2 background/species bonus. +1 from your 4th level feat = 17.
That's a +3 bonus.
At level 5 you're not guaranteed to have any magic weapons, let alone the ideal one for your build.
There are several combat styles that do not increase your damage.
I can't think of many additional damage boosters that stack on weapon damage that are broadly applicable enough to assume that they're always in effect.
UngainlyTitan's base example fits most fighters just fine. Optimisation or favourable DMs are not required assumptions.