I've made some ranged weapon cantrips. Admittedly I haven't tested them, but they might work for you.
Sehanine’s Bow (cleric)
Evocation cantrip
Casting Time: 1 action
Range: by weapon
Components: V, M (a bow and arrow)
Duration: Instantaneous
You fire an arrow from your bow which bursts into pure radiant energy. As part of the action used to cast this spell, you must make a ranged weapon attack with a bow against one creature within range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects and takes additional radiant damage equal to your spellcasting modifier.
The arrow is consumed when fired.
The spell’s radiant damage increases by 1d6 when you reach 5th level (1d6), 11th level (2d6), and 17th level (3d6).
Cobra Shot (sorcerer, wizard)
Conjuration cantrip
Casting Time: 1 action
Range: by weapon
Components: V, M (a bow and arrow)
Duration: Instantaneous
You fire an arrow from your bow which becomes coated in venom as this spell takes effect. As part of the action used to cast this spell, you must make a ranged weapon attack with a bow against one creature within range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects and must make a Constitution saving throw or become poisoned until the start of your next turn.
The arrow is consumed when fired.
The spell deals an additional 1d6 poison damage at higher levels: 5th level (1d6), 11th level (2d6), and 17th level (3d6).
Crimson Arrow of Cyttorak (sorcerer, wizard)
Transmutation cantrip
Casting Time: 1 action
Range: by weapon
Components: V, M (a bow and arrow)
Duration: Instantaneous
You fire an arrow from your bow which transforms into crimson energy once fired. As part of the action used to cast this spell, you must make a ranged weapon attack with a bow against one creature within range, otherwise the spell fails. On a hit, the target takes force damage equal to the bows normal damage and, if it is Large size or smaller, it is restrained until the start of your next turn as crimson bands of energy entrap it.
The arrow is consumed when fired.
Explosive Shot (sorcerer, wizard)
Evocation cantrip
Casting Time: 1 action
Range: by weapon
Components: V, M (a bow and arrow)
Duration: Instantaneous
You fire an arrow from your bow which bursts into flame once fired. As part of the action used to cast this spell, you must make a ranged weapon attack with a bow against one creature within range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects and the target and each creature within 5ft takes additional fire damage equal to your spellcasting modifier.
The arrow is consumed when fired.
The spell’s fire damage increases by 1d4 when you reach 5th level (1d4), 11th level (2d4), and 17th level (3d4).
Flaming Shot (sorcerer, wizard)
Evocation cantrip
Casting Time: 1 action
Range: by weapon
Components: V, M (a bow and arrow)
Duration: Instantaneous
You fire an arrow from your bow which bursts into flame once fired. As part of the action used to cast this spell, you must make a ranged weapon attack with a bow against one creature within range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects and takes additional fire damage equal to your spellcasting modifier.
The arrow is consumed when fired.
The spell’s fire damage increases by 1d8 when you reach 5th level (1d8), 11th level (2d8), and 17th level (3d8).
Freezing Shot (sorcerer, wizard)
Transmutation cantrip
Casting Time: 1 action
Range: by weapon
Components: V, M (a bow and arrow)
Duration: Instantaneous
You fire an arrow from your bow which forms into an icicle. As part of the action used to cast this spell, you must make a ranged weapon attack with a bow against one creature within range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects and takes additional cold damage equal to your spellcasting modifier and has its movement speed reduced by 10 feet.
The arrow is consumed when fired.
The spell’s cold damage increases by 1d6 when you reach 5th level (1d6), 11th level (2d6), and 17th level (3d6).
Multishot (sorcerer, wizard)
Evocation cantrip
Casting Time: 1 action
Range: by weapon
Components: V, S, M (a bow and arrow)
Duration: Instantaneous
You fire an arrow from your bow which splits into bolts of pure force. As part of the action used to cast this spell, you must make a ranged weapon attack with a bow against one creature within range, otherwise the spell fails. On a hit, the target suffers force damage equal to the normal damage from the bow and up to two creatures within 10 feet are struck by a single magic missile dealing 1d4+1 force damage.
The arrow is consumed when fired.
The spell creates an additional missile at higher levels: 5th level (3 missiles), 11th level (4 missiles), and 17th level (5 missiles).
