I don't track my gambling activities either, because I don't gamble that much... I mostly visit sports betting sites unless I feel like having some fun outside of sports betting.
You can find everything you need to monitor your gambling on the site itself, unless you want to track extra details like the time you spend on them. I'm not sure, but there should be some external tools to do that, or you could simply create one (if you have the knowledge) to track the time you spend on a specific URL.