Google 301 sitemap redirect error

Hi, yesterday I changed how my permalinks show , before it showed like this “https://….?p=123” and i used custom – /%category%/%postname%/ , everything works ok on my blog .

The only problem is with google, it found me many errors,all 301, because of the redirect from old structure to new structure ..

How can I solve this problem , if I cant , how do i remove the old ones ?

Also this made my blog to drop from the first page to go to 3rd page.. probably Google hates me now ..