[I need help to improve the performance of my skript]

I am pretty sure that the smelter is the thing that causes the lag

[I need help to improve the performance of my skript]

my skript works well without problems but it makes the tps drop really fast to around 13 

can someone help me improve it? its pretty long i use skript and skbee

on load:
    register new shaped recipe for {Tridentofthesea} using diamond, diamond, diamond, air, heart of the sea, air, air and diamond with id "tridentofthesea"
    register new shaped recipe for {drillCore} using iron ingot, redstone block, iron ingot, redstone block, diamond, redstone block, iron ingot, redstone block and iron ingot with id "drillcore"
    register new shaped recipe for {smelter} using iron block, coal block, iron block, coal block, flint and steel, coal block, iron block, coal block and iron block with id "smelter"

#bedrock drill
on place of a redstone lamp:
    if name of player's tool is "&7&lBedrock drill core":
        set {_loc} to event-blocks's location
        set {drills::%player%::%{_loc}%} to event-blocks's location
        play sound "block.note_block.pling"

on break of a redstone lamp:
    if {drills::%player%::*} contains event-block's location:
        remove event-blocks's location from {drills::%player%::*}
        drop {drillCore}
        cancel drops
        play sound "block.anvil.land"

every 1 second in "world":
    loop all players:
        loop all blocks in radius 20 around loop-player:
            if {drills::%loop-player%::*} contains loop-block's location:
                loop all blocks in radius 1 around loop-block:
                    loop-block-2 is bedrock:
                        loop all blocks in radius 2 around loop-block-1:
                            loop-block-3 is a gold block:
                                add 1 to {_gold}
                                {_gold} > 4:
                                    chance of 5%:
                                        drop gold ore at loop-block-1
                                        remove 4 from {_gold}
                            loop-block-3 is a iron block:
                                add 1 to {_iron}
                                {_iron} > 4:
                                    chance of 5%:
                                        drop iron ore at loop-block-1
                                        remove 4 from {_iron}
                            loop-block-3 is a coal block:
                                add 1 to {_coal}
                                {_coal} > 4:
                                    chance of 5%:
                                        drop coal at loop-block-1
                                        remove 4 from {_coal}

#smelter
on place of a chiseled polished blackstone:
    if name of player's tool is "&7&lOre smelter":
        set {_loc} to event-blocks's location
        set {smelters::%player%::%{_loc}%} to event-blocks's location
        play sound "block.note_block.pling"

on break of a chiseled polished blackstone:
    if {smelters::%player%::*} contains event-block's location:
        remove event-blocks's location from {smelters::%player%::*}
        drop {smelter}
        cancel drops
        play sound "block.anvil.land"

every 1 tick:
    loop all players:
        if {smelters::%loop-player%::*} is set:
            loop all blocks in radius 20 around loop-player:
                if {smelters::%loop-player%::*} contains loop-block's location:
                    loop all blocks in radius 0.1 of location of (block above loop-block):
                        loop-block-2 is a chest or a hopper:
                            loop all items in loop-block-2's inventory:
                                loop-item is a iron ore:
                                    remove 1 iron ore from loop-block-2's inventory
                                    add 1 iron ingot to loop-block-2's inventory

                                loop-item is a gold ore:
                                    remove 1 gold ore from loop-block-2's inventory
                                    add 1 gold ingot to loop-block-2's inventory

[can someone help me with something in my custom health skript?]

the skript works and all but when i die in send this error

"this script "rpg.sk" infinitely (or excessively) repeated itself!" 

skript:

on damage of a player:
    {hp.%victim%} isn't 0:
        remove 10 from {hp.%victim%}
        cancel event
    else:
        kill the victim
        set {hp.%victim%} to {maxhp.%victim%}

[Can someone help me i make a magic skript and this part dont work(the bold one)]

ty now it works i change it a bit and it still work 

every 1 seconds: 
    loop all players:
        if {mana.%loop-player%} is less than {manamax.%loop-player%}:
            add {manareg.%loop-player%} to {mana.%loop-player%}

and i dont know how to use list variables 

[Can someone help me i make a magic skript and this part dont work(the bold one)]

every 3 seconds: 
    loop all players:
        if {mana.%player%} is less than {manamax.%player%}:
            add 1 to {mana.%player%}