Check recursive apex in Salesforce.

CheckRecursive.cls

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

updateTrigger.trigger

trigger updateTrigger on SObject(after update) {
    if(checkRecursive.runOnce()){
        //Code here
    }
}