How do you minimize the squeak between chord changes at louder

Can anybody tell me her name please (thanks in advance)

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance

Thanks for the invite, in advance