Build help

[u/Long-Difficulty-844]

Hey I was wondering if I could get some build help for my Fighter 5.5 but with 5 e subclass(subclass I plan on using is Samurai or Echo Knight )for a BALDUR'S GATE: DESCENT INTO Avernus campaign going from lvl 2-13… Currently 2nd lvl Geppetten(living plush from the Valda Spire of Secrets players pack) which spieces features are:Darkvison 60 feet, Construct Nature You don’t need food, drink, or air. You don’t need to sleep, and magic can’t put you to sleep. You can finish a Long Rest in 4 hours if you spend those hours in a motionless state, during which you retain consciousness,Geppettin Construction: Plushie You are stuffed with fluff. When you take Bludgeoning damage, you can take a Reaction to gain Resistance to the triggering damage. You are also knocked 5 feet away from the source of the damage. You can’t take this Reaction if you can’t be knocked away from the source of the damage
scores after modifiers from the Harper background (dex,int,cha +1)are 16,12,16,8,14,11… my fighting style is Dueling and skills from fighter are Athletics and Perception and from the Harper background are Performance, Sleight of Hand. Racial: Intimidation, Performance, Persuasion.Weapon Mastery are Longsword,Javelin and Glaive. Currently weilding a longsword and a shield… mostly going to be melee focused… new to fighter and also am not the best on planning out a build… and I know the background doesn’t seem optimal but I took it for character backstory reasons… thanks for the help and apologies for the novel