There are free and premium form plugins, but there are some reasons why you should consider using a premium plugin.
Having your own business is hard, here are 3 lessons I have learned over the years.
Google ReCaptcha works in most places around the world, but if there is a place in the world that blocks recaptcha or google there are other ways to ensure you don't get spammed.
A loading icon is used very often on websites, but you shouldn't use it on your own website.
Without content a website doesn't say what you do, or what you offer. But if you use the wrong content you will miss your target audience.
Learn some things that a website audit company may look for when doing an audit, and learn what exactly an website audit is.
Blogging (or some other form of constant communication) is something all websites should have, learn how often and why.
If someone comes to your website they need to know what you do, so they can know if you are the right company for them.
There are so many themes and plugins it can be hard to find the best one, but there are so many blog posts telling you what the best ones are. There is no best theme or plugin for your website.
Google reCAPTCHA is frustrating for so many people that you shouldn't add it, and you should find some alternatives to it.