I am new to linux, as a windows user i thought installing Ubuntu on my old windows laptop will be as similar as installing windows later after installing Ubuntu, I realised that I accidentally deleted my partitions and data from my computer. I tried using testdisk but later i gave up because i don't want to mess up with the lost data. I have no idea about what should be done next.
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etc... or you can take it to a recovery centre who will charge for it, as yes its a detailed & somewhat complex process (that is very slow)... Recovery from backups the easy solution. Possibly best is to clone the drive & recover from the cloned copy so you can start again if you make a mistake etc... – guiverc Jun 02 '23 at 02:49