Hello fellow selfhosters, I tried to find a piece of software that could achieve my goal but maybe I am not searching in the correct areas. So I thought of asking here for suggestions or directions I could take.

What I am looking for:

I am looking for software that could fill a purpose of tracking like a helpdesk ticketing portal but not be a full blown ticketing portal.
For example I want to track current tasks like an RMA I am doing right now with Logitech (currently organized in my email inbox/folders) or keep track of shipments (currently tracked in Google Keep in this format: Shop | MM YYYY | Order-ID | Contents | Tracking:<Shipping Number>)

Features I am specifically looking for:

• Tracking items (like shipments)
• Keep track of issues (fix light bulb), Tasks (go to citizen office to renew ID),
  • Optionally: Keeping communication like E-Mails (like go back and see the communication history with Logitech concerning the RMA#999999)

Platforms I use:

Android and Windows.

What I have found so far and seemed to fit:

• Kanban Boards: https://kanboard.org, https://wekan.github.io
• Ticketing Boards: Zammad, glpi, freescout
• Whatever that can be classified as: Leantime

How I am coming to the conclusion I need something like that

• As mentioned earlier, I keep track of some stuff like shipments, overtime todo, money I am owing or someone does owe me in Google Keep. It kinda works but I feel like I am straining the borders of it's use case. And I fear Googles Graveyard
• I keep track of my e-mails via folders (to some extent). But I will probably not find the email of communication I had 5 months ago with that system.
  At work we use a classic ticket helpdesk system. I can more or less find the ticket of an issue a customer had on the phone and correlate it with the problem I have right now.
• Some of my knowledge base is in Obsidian.md for technical stuff or minor stuff like "find x here", while the stuff related for real life (e.g. recipes) are stored in OneNote.
  It's not necessary to consolidate it but maybe I can remove some of each into the new system?

What I would like to avoid:

Things like creating companies to track tickets with. I would rather just keep track of the issue (maybe with some form of history to go back in time?) and not be lost in endless classification of company number, telephone, contacts etc.

Maybe I am in search of a unicorn-glitter edition^tm and just need someone to tell me that doesn't exist or I am not looking for the correct thing or term.
The help is highly appreciated :)

PS: While preferred it doesn't need to be selfhosted. It should be accessible via smartphone (app or web doesnt really matter) and on desktop (program or web).

Update:

Currently in consideration are (thanks for the suggestions so far!):

• OpenProject
• Focalboard
• Vikunja
• Tarallo