Having read many of your comments, can I try and put a positive note on 3D printing.
I knew nothing about it when I purchased an Ender 3 Pro just after Ed bought his. In that time I have successfully printed quite a few model boat fittings - Bofors, vents, lifeboats etc., from Thingyverse, using Cura software to slice and re-scale (if necessary).
I have also upgraded to a silent motherboard and a dual drive extruder, with great help from YouTube.
Like you Ed, my first purchase of filament kept breaking so I am now using this - https://www.amazon.co.uk/1-75mm-Black-PLA-Printer-Filament/d... with no breakages so far.
To date, touch wood, I have had no problems and have really enjoyed the experience.
Ps. Please don't take this as blowing my own trumpet, it's trying to encourage those who are thinking of going for it.