Redesign my app front-end part for beautiful styling

Dear freelancer, please read the below:

Redesign only the frontend page without disrupting backend codes.

all i need is a beautiful theme styles.

Pages to styled:

https://www.infinity-stokvel.zenonhost.com/customers/signin

https://www.infinity-stokvel.zenonhost.com/customers/forgotpassword

https://www.infinity-stokvel.zenonhost.com/customers/signup

https://www.infinity-stokvel.zenonhost.com/pages/terms

https://www.infinity-stokvel.zenonhost.com/pages/privacy

https://www.infinity-stokvel.zenonhost.com/pages/agreement


Members Profile: this is the user page: https://prnt.sc/inu4AZdUqpGy

Admin backend system:
https://prnt.sc/9mEbTqyK3vxK

I am thinking of buying this bootstrap UI theme to apply which would be faster and easier.
https://codecanyon.net/item/onedash-bootstrap-5-admin-template/33808983