How to let clients leave reviews directly on the website?

Site: Www.uparrowproductions.com

I'm a photographer that uses my website more for marketing than actually selling my services. I prefer to have clients reach out to me directly rather than book an appointment through my website. However, what I am looking for is a way to have clients write reviews for my services and post them directly onto a testimonials page on the website. I know I'm able to embed reviews from outside sources (Google, Yelp, etc.) but I'd much rather have a way for them to add the reviews straight onto the site, since that's what I advertise most. I also don't sell any products so I don't think Squarespace's Product Review function will be much help to me. I considered asking clients to just email me their reviews so I can post them in a blog-esque form, but that feels more disingenuous having the review go through me first rather than them being able to put it up themselves. Anyone have any ideas or ways they know of to accomplish this? Thanks!

(If you have any notes on the website itself, I'll happily take those too!)

50 minutes ago, UpArrowAdam said:

I know I'm able to embed reviews from outside sources (Google, Yelp, etc.) but I'd much rather have a way for them to add the reviews straight onto the site, since that's what I advertise most.

As you mentioned, you can do this using third party review products like Trustpilot. Squarespace does have a built in reviews feature but reviews can only be added by customers who make purchases via the site (they receive a link in an automated email).