Read the book?
If you liked it...
Yay! I'm so pleased you enjoyed the book.
Most writers are delicate flowers, and need encouragement. And book sales.
To help any author, if you like a book well enough to recommend it, be certain to leave reviews with booksellers (regardless of where you purchased it) and Goodreads.
Now go and...
Tell you friends.
Tell your family.
Tell your coworkers, your book club, your strange cousin from New Jersey.
Thank you so much for reading!
If you didn't like it...
That's okay - I really appreciate you for giving it a try!
There's no such thing as a universally liked book. Find any bestseller, and you will discover plenty of folks who like it about as much as reading tax code in Latin.
Hopefully your next book will be more suited to your preferences. Here's a few websites* to help:
https://www.whatshouldireadnext.com/
*These are "what should I read next" websites. These are not affiliated / promotional / monetary links where I benefit or profit in any way. You can also enter "what should I read next" in your preferred web browser.