"make a script that make that when i press g my character plays an animation and a nearby player plays another different animation"

-- local script 
local UserInputService = game:GetService("UserInputService")
local Players = game:GetService("Players")
local localPlayer = Players.LocalPlayer
local character = localPlayer.Character
local humanoid = character:FindFirstChild("Humanoid")
local animation1 = humanoid:LoadAnimation(Instance.new("Animation"))
animation1.AnimationId = "rbxassetid://AnimationID1" -- replace AnimationID1 with your animation id

local animation2 = humanoid:LoadAnimation(Instance.new("Animation"))
animation2.AnimationId = "rbxassetid://AnimationID2" -- replace AnimationID2 with your animation id

local function onKeyPress(input)
    if input.KeyCode == Enum.KeyCode.G then
        animation1:Play()
        local players = Players:GetPlayers()
        for i, player in pairs(players) do
            if player ~= localPlayer and (player.Character.HumanoidRootPart.Position - character.HumanoidRootPart.Position).Magnitude <= 10 then
                local otherHumanoid = player.Character:FindFirstChild("Humanoid")
                local otherAnimation = otherHumanoid:LoadAnimation(animation2)
                otherAnimation:Play()
            end
        end
    end
end

UserInputService.InputBegan:Connect(onKeyPress)