i have a trigger and trigger helper class to create opportunity on contact after insert and afetr update. it works great but if i edit contact record it creates opportunity again

i have created recursive class below

how do i write into trigger helper class or trigger or both to run the recursive class? i'm trying to use  if(checkRecursive.runOnce()) but i dont know where to add it?

public Class checkRecursive{
    private static boolean run = true;
    public static boolean runOnce(){
    if(run){
     run=false;
     return true;
    }else{
        return run;
    }
    }
}

 

trigger easycontacttrigger on Contact (before insert, after insert, before update, after update, before delete, after delete, after undelete){
    
if(Trigger.isUpdate  && Trigger.isAfter){
    
    

easycontacttriggerhelper.sellercon(Trigger.new);
easycontacttriggerhelper.buyerconConveyancy(Trigger.new);
easycontacttriggerhelper.buyerconMortgage(Trigger.new);
easycontacttriggerhelper.buyerconhomebuyerreport(Trigger.new);
easycontacttriggerhelper.buyerconutilityswitchgas(Trigger.new);
easycontacttriggerhelper.buyerconutilityswitchwater(Trigger.new);
easycontacttriggerhelper.buyerconutilityswitchelec(Trigger.new);
easycontacttriggerhelper.buyerconremovals(Trigger.new);
easycontacttriggerhelper.buyercongassafetycheck(Trigger.new);
easycontacttriggerhelper.buyerconpattest(Trigger.new);
easycontacttriggerhelper.buyerconaffiliates(Trigger.new);



}
    

else if(Trigger.isinsert && Trigger.isafter){
easycontacttriggerhelper.sellercon(Trigger.new);
easycontacttriggerhelper.buyerconConveyancy(Trigger.new);
easycontacttriggerhelper.buyerconMortgage(Trigger.new);
easycontacttriggerhelper.buyerconhomebuyerreport(Trigger.new);
easycontacttriggerhelper.buyerconutilityswitchgas(Trigger.new);
easycontacttriggerhelper.buyerconutilityswitchwater(Trigger.new);
easycontacttriggerhelper.buyerconutilityswitchelec(Trigger.new);
easycontacttriggerhelper.buyerconremovals(Trigger.new);
easycontacttriggerhelper.buyercongassafetycheck(Trigger.new);
easycontacttriggerhelper.buyerconpattest(Trigger.new);
easycontacttriggerhelper.buyerconaffiliates(Trigger.new);








}

    if(Trigger.isinsert && Trigger.isbefore){
        
easycontacttriggerhelper.contactuserfields(Trigger.new);        
        
    }
if(Trigger.isupdate && Trigger.isbefore){
        
easycontacttriggerhelper.contactuserfields(Trigger.new);        
        
    }

    
}

part of thehelper class below:

public static void sellercon(list<Contact> cons) {
    
   
    
list<Easy_Opportunity__c> opplist = new list <Easy_Opportunity__c>();

recordtype[] tt = [Select  r.Id, r.SobjectType, r.Name From RecordType r where sobjecttype ='Easy_Opportunity__c' and Name = 'Residential Sales'];

for(Contact con : cons){



if(  con.Stage__c == 'Lead' && con.contacttype__c != null  && con.contacttype__C.contains('Seller' ) ){

Easy_Opportunity__c newopp = new Easy_Opportunity__c ();



            
            
            newopp.ownerid = con.allocated_user__c;
            newopp.name = 'Market Appraisal'; 
            newopp.account_name__c = con.accountid;
            newopp.CurrencyIsoCode = con.currencyisocode;
            newopp.stage__c = 'New';
            newopp.recordtypeid =  tt[0].Id;
            newopp.Contact_Name__c = con.id;
            newopp.Close_Date__c = Date.today().addDays(2);
            
            
            

            opplist.add(newopp);

   insert opplist; 

List<Product__c> Pd = (List<Product__c>) System.Json.deserialize('[{"attributes":{"type":"Product__c"},"Recordtype.name":"Residential Sales","Name":"Market Appraisal","Sale_Price__c":"111.00"}]', List<Product__c>.class);
    for (Product__c eachProd : Pd)
 eachProd.Easy_Opportunity__c = opplist[0].id;
    
insert Pd;
    
   
 }
 }

}