Hey happy to assist!
Can I confirm you are on a Raspberry Pi 4, and just to start trying to diagnose the issue here how old is your MicroSD card? This is usually the most common culprit, some are rated with lifespans of 6 months - 1 year so it may be worth to reflash the MicroSD card or use a new one if possible to isolate the issue. Can you also please provide your debug log? You can generate it via System > Troubleshoot > Start and upload the log file. Steps on how to SSH and generate the debug log are also available here: Official Umbrel Troubleshooting Guide and FAQ
If you print the log via the command line you can copy and paste a link from here to share it http://www.pastebin.com for easier review if you don’t want to paste the whole log right onto the forum.
Happy to review and further troubleshoot