[Pls Help with this cooldown]

here you go. some of the percentages were '&'

on left click:
    if uncolored name of player's tool is "Wand":
        if {Fireball2::%player's uuid%} is 0:
            shoot fireball from player at speed 10
            set {Fireball2::%player's uuid%} to 1
            wait 3 second
            set {Fireball2::%player's uuid%} to 0
        else:
            send "This Ability Is On Cooldown"

 

[Skript variables in Essentials Chat?]

It indeed is. https://github.com/PlaceholderAPI/PlaceholderAPI/wiki/Placeholders#skript

["can't understand this loop"]

When using players, use players for multiple players and player's for a singular player.
 

on join:
    if {kills::%player's uuid%} is not set:
        set {kills::%player's uuid%} to 0
    if {deaths::%player's uuid%} is not set:
        set {deaths::%player's uuid%} to 0
    if {streak::%player's uuid%} is not set:
        set {streak::%player's uuid%} to 0

every 1 second in world "LifestealFactions":
    loop all players:
        if loop-player's world is "LifestealFactions":
            set title of loop-player's scoreboard to "&e&l⊂Lifesteal Factions⊃"
            set line 16 of loop-player's scoreboard to "&e&lServer Stats"
            set line 15 of loop-player's scoreboard to ""
            set line 14 of loop-player's scoreboard to "&9»» &ePlayer: &6%loop-player's uuid%"
            set line 13 of loop-player's scoreboard to "&9»» &ePlayers: &6%size of all players%&8/&6%max players%"
            set line 12 of loop-player's scoreboard to "&9»» &eIP: &6NaylarMC.minehut.gg"
            set line 11 of loop-player's scoreboard to ""
            set line 10 of loop-player's scoreboard to "&e&lPlayer Stats"
            set line 9 of loop-player's scoreboard to ""
            set line 8 of loop-player's scoreboard to "&9»» &eFaction: &c%{faction.loop-player}%"
            set line 7 of loop-player's scoreboard to "&9»» &eBalance: &c%{coins.loop-player}%"
            set line 6 of loop-player's scoreboard to "&9»» &eKills: &c%{kills::%loop-player's uuid%}%"
            set line 5 of loop-player's scoreboard to "&9»» &eDeaths: &c%{deaths::%loop-player's uuid%}%"
            set line 4 of loop-player's scoreboard to "&9»» &eKDR: %%{kills::%loop-player's uuid%}%/%{deaths::%loop-player's uuid%}%%"
            set line 3 of loop-player's scoreboard to "&9»» &eKillstreak: %{streak::%loop-player's uuid%}%"
            set line 2 of loop-player's scoreboard to ""
            set line 1 of loop-player's scoreboard to "&e&l»» Lifesteal factions"

on death:
    add 1 to {kills::%attacker's uuid%}
    add 1 to {deaths::%victim's uuid%}
    add 1 to {streak::%attacker's uuid%}
    set {streak::%victim's uuid%} to 0

 

[Disable crafting with an item that has a specific name]

on craft:
	cancel event

[Uhm Mods????]

What exactly is going on here???

[Could someone make me a skript?]

options:
	prefix: <insert prefix here>
    
command /freeze <player> [<boolean>]:
	permission: freeze.use
	trigger:
		if arg-2 is set:
			set {freeze::%arg-1%} to arg-2
		else:
			if {freeze::%arg-1%} is true:
				delete {freeze::%arg-1%}
			else:
				set {freeze::%arg-1%} to true
		if {freeze::%arg-1%} is true:
			send "{@prefix} &8» &7%arg-1% &7is now frozen!"
			send "{@prefix} &8» &7You are now frozen!" to arg-1
		else:
			send "{@prefix} &8» &7%arg-1% &7is no longer frozen!"
			send "{@prefix} &8» &7You are no longer frozen!" to arg-1
            
on any movement:
	{freeze::%player%} is true
	cancel event

Make sure to change <insert prefix here> to your command prefix!

The perm for it is freeze.use

[Skript {Example} help]

Ok i suggest that you do {Deaths.%player%}?