Defer in script tag not work as script evaluates before HTML is parsed

Question

<script defer src="js\js_W2mJqnHnL8R-M2XrnaNYgPkWXECHurpgXtp2OSv8apY.js"></script>

I have put the above script in head tag.

I consider this a render blocking resource as the lcp loads after this

I don't want this to happen and want it to be evaluated later after the html is parsed.

What to do?