Arzopa 2K Portable Monitor, 13.3'' Ultra-Slim 2560x1600 100% sRGB Portable Laptop Monitor, USB C HDMI Gaming Computer Display IPS Eye Care Screen w/Smart Case & 2 Speakers, for PC Mac Phone PS4 Xbox

Hi all, any help with this matter would be appreciated. I've had [this portable monitor](https://www.amazon.com/gp/product/B095PFPLZ4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) for a while and it works extremely well. I connect it directly to my laptop (I have a Surface Pro 7 which I keep plugged in to power everything) via a standard USB-C to USB-C that was included with the monitor. That's the only cable I need, it supplies both power and the display connection. However, I have a new monitor at work and would like to use both while I work. The new monitor uses a standard HDMI cable. My question is: are there any dongles that would allow me to continue connecting my portable monitor via the single USB-C cable only *AND* let me connect the HDMI, for a total of 3 screens (including laptop)? I've tried [this](https://www.amazon.com/dp/B0BR3M8XHK?psc=1&ref=ppx_yo2ov_dt_b_product_details) and [this](https://www.amazon.com/dp/B0BVLZ4LXR?psc=1&ref=ppx_yo2ov_dt_b_product_details) dongle thus far. Using the first dongle's sole USB-C port, I get power but no signal. Using the second dongle's unpowered USB-C port, the same happens. However, nothing happens in the latter's powered USB-C port. I checked the Wiki but didn't find anything directly applicable, although I'm starting to think I may need a hub or dock instead. Regardless, I'm sure I've missed something quite obvious like a hardware spec on the dongles, or perhaps this is just not possible, but this isn't my field and at some point I feel it's smart to ask for help. Thanks very much in advanced. EDIT: "hub or dock"