I an similar. I do not use a smart phone which takes better pics. My digicam had to be at least 1- year old. I use it in the auto mode. In the old days of film cameras I use to do B&W fil, developing and then printing in home based darkroom I set up in a bathroom. I worked mostly at night and blocked any light that might come under the door etc.
In the late 1960s I worked as an assistant in a commercial photo studio in New York City. I also worked in an large private art galler where one of my jons was to photograph the collection. They had a huge bellow camera for thay. I loaded and used sheet slide film 5x7 and 8-10 size. I was close to being a professional photographer. By 1970 I had left the photo field. I lost the skills and knowledge because I never used it again. When I got fish, cameras were digital with no film and I just used the auto setting.
Now what I do is shoot a bunch of pics and hope one will be usable. That is why so many of the tank pics I post here are so poor. I have issues with how small a digital camera is. I cannot even pick one up without accidentally pushing something I had no desire to. I hate todays tiny devices and that includes a smart phone which I do not use. However, I do know they take excellent pictures which work way better doing point and shoot than a digicam.
I had a smart phone which I got tto serve as a way to get online with a laptop when at fish events. But fortune made both devices unnecessary because I developed several customers who became large volume repeat buyers and the fish moved out with my needing the phone or three laptap. The smart phonn has been in a drawer no for over 3 years and has no charge and has not for most of the time. I tried to use it as a camera but I do not work well with touch screens. The laptop went back into service because my PC still uses Windows 10 with the addition support for which Microsoft charges.
But I have used TurboTax since it was DOS based and they required Windows 11 to work as of last year. My PC guy was able to force 11 onto the old laptop. I used it for about 1 week or 10 days last April for that and it has not been turned on since. I will use it again when I file this year's taxes in Apr, 2027. Fpr everything else I do online etc, I use Win 10. I still have my old windows 7 box which I kept as I can work the picture editing software on it. it is never used to be online. The editor can fix a lot of the bad camera pics I usually take.
If you have a snmart phone, that would be the best way to take fish related pics.
p.s. I do not use anything with a touch screen as 9/10 times I touch a screen, nothing happens. I have dry skin and having my hands in tanks a lot makes it even worse.