Purity doubts and issues

I suffer from waswas and when I was doing ghusl, I kept on struggling to remember if I did this 3x? or did I do this right? And I feel like when I was doing wudoo in my ghusl I don’t remember if I washed my nose 2x instead of 3 so after I did ghusl and dried and wore clothes I realised I might’ve done wudoo wrong, so is it permissible for me to perform wudoo again like I would for regular salah when I’m fully clothed or do I do ghusl again? Also I forgot if I gargled and washed my nose 3x so as soon as I got out of the bath I did that straight away 3x then I dried and wore clothes and performed wudoo again, is my ghusl correct?