I edit for a living also. Mostly AVID but the past few years I've been using Resolve as well. I think for what @brooklandsblue2.0 needs though it's waaayyy overkill and a steep learning curve. Definitely a huge step-up in all aspects from the other freebie editors mentioned...but I would stick to those for now.
I sort of agree, but most NLEs work in the same basic way. They have added is a new "CUT" tab that is basic cutdown of the "edit" tab so that may help. You are right though, it is overkill, but it's free to so no loss if it's a bit much. Avid is starting to feel a bit archaic to me know after trying to learn other NLEs over lockdown, although I'm so bloody slow on premiere and Resolve! Resolve is mental bang for your buck though. I'm pretty sure I'm going to buy the Studio version, as I grade as-well and for 240 quid its a steal!