I just build my own solution. I've dabbled with many tools, services and methods over the years, but they all suck in some way, because they are not custom-made

I just build my own solution. I've dabbled with many tools, services and methods over the years, but they all suck in some way, because they are not custom-made for my demand and personal situation, and I will always find some critical unfixable flaw which will nag me. Also, humans are lazy, and organization is a low-level job where little flaws can make a big difference. So at the moment, my solution is to generate daily a markdown-file with routines, unfinished routines from the previous day, and links to visit that day. It also has a section for notes, and a dataview-query for filtering urgent and due tasks from my vault (dataview is an extension for obsidian). For the regular tasks, I have either Google Keep, which I use to collect notes, links, photos for later, or markdown-files, for which I have a routine to review them regularly, or just use on the spot if work leads to them. It's not perfect, has some flaws and lacks features, but it's my system, and I can work on fixing the flaws because everything is open and accessible. Before this, I used todoist, which is also quite good, but it had some critical flaws for my workflows, so I moved away after some years.