Some people just aren’t worth keeping as friends
Even if you really want to be so much that you’re walking on eggshells for them, but it still ain’t enough. Hindsight is 20/20 and looking back, you might come to realize it wasn’t much of a friendship anyway (at least not from them). Disappointing as it is, you’re actually better off not having to waste your time and energy on them anymore. Can’t say it ended due to a lack of you trying, nor that they obviously valued you as much as you did them.