My friend recommended I watch the Netflix series "Kantaro: The Sweet Tooth Salaryman" last year.

What you had is okay, but it's also good to reflect that your friend recommended that you watch the show.

It's a hilarious comedy show which is hilarious.

Switching the word order can help the sentence read more clean

He pops into a cafe while he is out for sales.

The verb "pops in" isn't used as much in speech, but if you use it to refer to a café, you physically go into a café.

After he hadate the sweets, now every time he eats them he makes a really funny face withof satisfiedaction.

I love theat face, so I took a picture of myself making a funny face like him when I hadeat sweets.

"That" because you are referring to a specific type of face and not an individuals' face in general. The verb at the end changes to eat because it is a face you make when you eat sweets.

I've been using it on my profile on social media. profile

What you have works, but you can simplify the sentence by grouping the final concept, because you are describing your own social media profile.

It's a hilarious comedy show which is hilarious.

After he had sweets, every timeEvery time he has some sweets, he makes a really funny face with, satisfied face.

I love the/that face, so I took a picture of myself making a funny face like him when I had (some) sweets.

My friend recommended the Netflix series "Kantaro: The Sweet Tooth Salaryman" to me last year.

It's a comedy show which is hilarious.

Your original sentence is grammatically correct, though I think a more natural phrasing could be "It is a hilarious comedy series."

The main character is an office worker who has a sweet tooth.

He pops in ato cafes while he ienever he heads out for saleswork.

After he had sweets, every timeEvery time after eating sweets, he is so satisfied that he makes a really funny face with satisfied.

I love the face, so I took a picture of myself making a funny face just like him whenafter I had sweets.

I've been using it onas my profile picture on social media.

It's a hilarious comedy show which is hilarious.

If you say, "It's a comedy show which is hilarious," it sounds like you're saying that the fact that it's a comedy show is hilarious.

He pops into a cafe while he is out for sales.

After he had sweets, every timeEvery time he has some sweets, he makes a really funny face with, satisfied look.

I love the face, so I took a picture of myself making a funny face like him when I had some sweets.