Pick your battles. Choose whatever is annoying/infuriating you the most right now and focus on it - scratch that itch until you feel you understand that aspect, use that learning elsewhere, to prove to yourself you do get it, and repeat :)
I have a respected colleague who simply says of himself 'I poke at stuff until I can make it work'. He's probably the most experienced SQL, Powershell, Sysops, AWS, Terraform, AzureRM, ...(it goes on) expert I know and we all ask him stuff before we hit the search engine. He has no formal qualifications such as a degree or vendor certifications, he simply chose to learn one thing at a time over the last 30 years, and never stops!
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