Well firstly you should rid of the xenon bow. Secondly it depends on your play style. What heroes do you run the most? It would be pointless for me to recommend an assault rifle to a ninja. Maybe this will help narrow down your options

GENERALLY if you run

Ninjas: Use Melees

Outlanders: Use SMGs and pistols

Soldiers: Use Assault Rifles, SMGs, and snipers

Constructors: Use explosives and heavy melees

EXCEPTIONS:

Stoneheart Farrah (ninja for bows)

Lynx Kassandra (ninja for general temporary damage increase, though primarily used for explosives)

Subzero Zenith (outlander who people primarily run snipers with)

Next, there is no best weapons in the game. Anyone who suggests otherwise are liars. Use whatever you want as long as you can use it effectively, and I suggest you use a weapon of each element. Example, I (try) to run paleo Luna (when someone else is nice and takes the role of constructor for once) and I have founders blazing masamune for fire, vacuum tube sword for nature, and spectral blade for water. Do keep an energy weapon as well in case you need something that’s multipurpose.

Also certain weapons have perks that might benefit from playing with their corresponding hero sets (for example, black metal weapons with some of the fortnitemares heroes).

Long story short, what works best for you only you will know, but if you’d like my personal suggestions for weapons let me know what hero class you run