wi fi router for gateway

To answer the questions above.  I have a ranch house, 2100 sq, ft. I usually have my phone, laptop, a tv (streaming) and ring doorbell connected. This can go up to 2 tvs at a time and more cell phones. I don't use it for gaming, etc. Just streaming and normal computer activities. I also have a wi fi repeater, but I am not even using that right now.

I ordered the fan that Nater Tater recommends, it hasn't arrived yet.. I have the gateway in the coolest room of the house. I keep my AC at 68 so it's pretty cool in there. it is near a window but does not get direct sunlight,  

The reason I was looking for an inexpensive router at first was to see if it even helps. I am on the fence about even keeping t-mobile. I am not in a rural area. I have about 5 other choices including comcast, frontier, verizon ….. They arbitrarily changed my bill from $50 to $65 a month…….  I was without internet for almost a full month due to the first gateway dying, then the 2nd gateway they sent didn't work either. So now, this third one works, but my speeds are so slow.  I am between a bunch of towers. The tower I connect to, no matter where I put the gateway in my house, is to the northeast and according to cell mapper not even transmitting my direction. I am in range for 2 other towers, but they both appear to be not active now.  I think they are doing maintenance on 2 of the 4 towers in the area and they just have all of us jammed on one tower….

I ordered a TP-Link Wifi 6 AX1500 Smart WiFi Router (Archer AX10) - 802.11ax Router.(It is returnable) If I need to buy an ASus I can. I am disconnecting Frontier at the house I just sold and moved from. It has a brand new router (that I will need to return) but I could try that one too,  

Thanks for all the help guys. I am just a retired "old" lady. I am recovering from a broken femur and  just last week had to have foot surgery on the opposite leg. SO…..I am house bound for now, have no cable, just stream and surf on my laptop. I need some decent internet so I don't lose what's left of my mind!  Thanks again