To remove link in Blog post title and image, you can use these CSS code to Website Tools > Custom CSS.
If it doesn’t work, you can send link to blog page, I will check it again.
#1. All Blog items
article.blog-item {
pointer-events: none;
}

#2. Blog title/image belongs specific Blog Page
First, find Blog Page ID.

Next, use CSS code like this
#collection-6677756d03a4f15ba27ce9d8 article.blog-item {
pointer-events: none;
}
#3. Specific blog title/image
First, you need to find blog item url slug by access Settings

See Post URL
Next, use CSS code like this
article.blog-item:has(a[href="/blog-2-1/the-mountai-bike"]) {
pointer-events: none;
}