Aye man, same here as I say.
That India cycle trip I done was essentially unplannable anyway lol- I just kept the sea on my right and made it up as I went along. The Europe trip was with paper maps as I went along- the depth of planning a month before was: "I want to see Belgium, Germany, Austria, Slovenia and Italy" and off I went.
I ended up seeing a few other countries too..!

Maybe hard to believe but I've only had a mobile phone for a few years too- I put it off a long as I could as am not a fan. It's proven to be really useful though- but yeah, I basically steer away from tech solutions.
In this case though it'll be the first time planning with all these tools- and ironic as in a way it's the first trip it's not actually beneficial in a way- like you say "Keep the sea on your right!".
But I do want to make sure I see as much of the sights in the most pleasant way possible- and this allows me to prep for that which is honestly great.