Honestly there is nothing worse than a mushy avocado.
Here's what to do. If they are hard and green leave them out until they have a little 'give' gently pushing on the ends and the fatty part. Once they have that put them in the fridge. This stops the ripening for the most part. Next, if you're not going to eat the whole thing in one day then out some Plastic wrap or waxed paper and make sure to create an airtight barrier on all exposed surfaces, then push down lightly on a plate. It it's not air tight it will go bad. There are things like lemon/ lime juice or fat like sour cream, cream cheese, mayo that will help stop the browning if made into a dip. Avocado mayo is good and masks the avocado. I think it's equal portions of both with some lemon or lime squeeze. Personally I like my mayo and avocado separate but if helps you choke it down then I say do it.
If you like spicy then smash it either smooth or chunky with a fork and add these ingredients as desired. Lemon or lime squeeze, spicy pepper seasoning, salt, pepper, either cilantro or basil, ( I LOVE it with basil. So fresh ) onion, garlic all to taste. Then eat with a spoon or celery or baby carrots or radishes slices instead of chips.
You can even make avocado pudding with cocoa. I haven't tried it. I hate messing with a good avocado!! Google has LOADS of recipes so you don't have to just eat it. For me it does usually require salt to bring out the flavor.
Happy you're going to try again. They do require maintenance but well worth it in my opinion.
