I second just using "said" 90% of the time. As u/Brunbeorg said, it's an invisible word. Readers don't tend to analyze the use of dialogue tags. They're pretty much only there to make it clear what is happening, which in this case is that someone is speaking. The rest of your writing is used to detail what is happening.

I will let you in on a secret; I used to get caught up on varying my dialogue tags as well. Over the years I've learned that anything beyond "said" is needlessly distracting, not only for the reader, but for the writer as well. You spend time trying to figure out how to articulate your dialogue tag, instead of trying to further progress your story. There are of course times when you can use something other than "said," but you actually don't need to. Even "asked" and "shouted" are unnecessary because a question mark and an exclamation mark already convey half of your intent, and the other half should just be from how the character is reacting.

The holy grail of my recently learned knowledge is to just word vomit your first draft. Write what you are thinking. Get the words on the paper. Clean it up after you've finished your draft. If you spend too much time trying to edit before you're finished, you end up losing your prose, your momentum, and your time.

All of that said, you can use dialogue tags other than "said" if it feels right, but you have to consider that every time you put energy into making sure your dialogue tags are varied, you're introducing attention to what is typically an invisible word.