To advertise on Etsy or not to advertise on Etsy, that is the question????? Worth it or waste of money?????

Hi all, I started my etsy store (https://lumaatelierstudios.etsy.com) almost a year ago but have only been consistent the past 2/3 months. I have around 200 listings currently and I am posting 5 more daily. Ill have a week like 2 week ago where I did £300 in sales, but then hardly anything for 2 week after, its very on and off and I have one listings in particular that carries the majority of my sales which is this (https://www.etsy.com/uk/listing/4501458751/olive-botanical-wall-art-mediterranean?ref=listings_manager_grid) - can anyone check over my store and see where I can improve? or have more listings perform like the one I linked. I tried to make variations of that listing to repeat what works but nothing even gets close to this one in terms of performance for me. any recommendations or tips would be great.

Hey guys, Hope you are all good and enjoying the world of selling posters! I hate to ask, but TrustPilot reviews help us out MASSIVELY! So, if you see this and can spare 30 seconds of your time, please feel free to share your thoughts about PrintShrimp and leave us a review 😆 https://www.trustpilot.com/review/printshrimp.com

I am at a loss as to how to handle this. I sold a large framed print. My first frame sale. The review came in as 3* and the customer's comment was ........"£159 for a cheap £10 frame and a piece of paper not as described"....... So my question is, how do you handle bad reviews? has this happened to your shop? and how did you respond to the customer?

Hi guys, I'm currently making a video mock-up for individual listings. Kling AI is doing a great job, but it's a bit expensive in the long run. Does anyone have any suggestions for AI video creation that won't break the bank? Cheers!