Backyard landscaping

Unfortunately we bought a house with a beautifully landscaped backyard and pool, but it is an absolute nightmare to keep the pool clear and clean with all the debris that is consistently falling into it year round. For the big items, we have a pecan tree, two white oaks, one live oak, 8 crepe myrtles, two olive trees, and lots of banana trees. It is always something depending on the time of the year; we have about 3-4 weeks out of the entire year nothing is falling & I’m done. We have been in this house 6 years and have a toddler; it’s just too difficult to maintain & a giant pain in the butt. This is a relatively small yard of maybe .10 of an acre, so everything ends up in the pool and it’s constantly causing PH issues. There’s nothing we can do about the oaks or pecan tree & the banana trees are no issue. I’m thinking if we get rid of the very mature beautiful crepe myrtles that surround the pool, it’ll be a relief. What should we plant in its place that would be beautiful and not shed its leaves or flowers? We live in Lafayette LA for reference & I’m a pretty poor landscaper (we are way in our heads with the landscaping, so something easy to maintain). We are considering citrus trees, but I’m open to opinions and suggestions! Thanks in advance and sorry for the long post