Account Detail Page Button Click Create New Related Contact in Visualforce page

public class ContactCreation {
    
    public contact myNewContact{set;get;}
    Account acc;
    public ContactCreation (ApexPages.StandardController st){
        this.acc = (Account)st.getRecord();
        myNewContact = new contact();
    }
    public pageReference SaveRecord(){
        
        myNewContact.AccountId = acc.Id;
        Insert myNewContact;
        PageReference pageRef = new PageReference('/'+myNewContact.id);
        pageRef.setredirect(true);
        return pageRef;
    }
}

<apex:page standardcontroller="Account" extensions="ContactCreation" sidebar="false" showHeader="false">
    <apex:form >
        <apex:pageBlock >
            <apex:pageBlockSection >
                <apex:inputfield value="{!myNewContact.lastname}"/>
                <apex:inputfield value="{!myNewContact.firstname}"/>
                <apex:inputfield value="{!myNewContact.email}"/>
                <apex:inputfield value="{!myNewContact.MobilePhone}"/>
            </apex:pageBlockSection>
            <apex:pageBlockButtons location="bottom">
                <apex:commandButton action="{!SaveRecord}" value="Save"/>
            </apex:pageBlockButtons>
        </apex:pageBlock>
    </apex:form>
</apex:page>