What are they?
I ditched Windows roughly 15 years ago and I run a MS Silver partner shop.
I daily drive Kubuntu (was Arch but I need to tick boxes). I used to teach DTP, WP, spreadsheets etc and Libre Office is fine as a replacement for MSO. Email - Exchange and Evolution EWS. I create the most complicated docs in my firm and MSO works with them OK.
I 3D print stuff and use LibreCAD and OpenSCAD. All good. Also note that there are lots of other CAD apps on Linux for free/libre and of course we have
As far as I am aware, games is the only area that Linux might fail and that issue is shrinking rapidly.
You have loads of options but you need to also start from … “what if”. Work out how important your data really is. Take another look and ask the kids and others if they give a toss. You might find that no one cares about your photo collection in which case if your phone dies … who cares? If you do care then sync them to a PC or laptop.
Perhaps take a look at this - https://www.veeam.com/products/free/linux.html its free for a few systems.