Dear Sir,

#1. To remove breadcrumb on homepage:
Step 1: Setup page for home page: https://prnt.sc/w077r7

Step 2: Select template Homepage on Page settings: https://prnt.sc/w0783h

#2. To make breadcrumb smaller on the other pages, please use css code:

@media (min-width: 768px)
.poco-breadcrumb {
    padding: 1em 0 importaint;
    min-height: 100px importaint;

add into file style.css on child-theme.