Then use the components in the rules, to solve for your problem, because unless you get a feature that puts Fighter, built for and aimed at combat, on par with a Bard/Wizard/Sorc/Warlock, I dont get the impression you'll be satisfied.
Then you are both wrong and intentionally injecting something into their words and mine that none of us has said.
Is it the 'Fighter' you are hung up on? You want to play a Fighter, but you want Social power? Just play a Bard, and call it the Fighter?
Ha.
Hahaha. Hahahahahahahaha.
Oh, the wheel turneth, and yet the cart moveth not. How things change and yet how they stay
precisely the same.
Do you remember the 4e edition wars? There were folks who screamed bloody murder because they "couldn't" play a 4e Fighter specialized in doing damage (even though you totally could, you just had to pick certain features and build up to it over time.) 4e players naturally said, "Well, if you want to play a martial character in medium to heavy armor who is very good at killing people and never really needs to use anything especially supernatural, that's precisely what the Ranger is."
No points for guessing who won that argument, I'm afraid.
Now, you come to me and say, "So, you want to play a character that wears heavy armor (something no Bard can do natively), who fights purely with grit and thews (something no Bard does because every Bard is not just a spellcaster but a
full spellcaster), but who also can make significant but not overwhelming contributions to social or exploration scenes?
Why not play a Bard?"
In the 4e case, it was
literally true that Ranger did everything the critics asked for, it just had a different set of letters written at the top of the character sheet. In this 5e case, Bards are
completely unacceptable, being
full casters who can only dabble in lightly-armored dextrous fighting and have little to no reason to pick up a bow. It completely defeats one of the key points, wanting to be a character that
doesn't cast spells.
If you had at least said Rogue I could be mollified by the fact that you at least
tried to care about one of the most important reasons someone might want to play a Fighter, a reason that is
dramatically more important than mere "so...the problem is the name at the top of the page???" Rogue would still be inadequate for other reasons, but it would have been a good effort.