If you need a form ( or different forms for different types of products) in the product page, then if you can use the powerful WooCommerce product Add-Ons (which requires the Plus version) or our simple product extra fields. product extra fields does not requires the Plus version)
The advantage of WooCommerce product add-on is you can attach a price to the extra fields. With extra fields, you cannot assign a price to the extra options or fields. Please note that in product page, the form is attached to that line item in the quote. By contrast the forms in the checkout pages, are attached to the whole order