YT plugin for Kodi is quite decent. Have it daily in use, no issues so far.

It’s trillan you are talking about. I am old too :D

Nothing wrong with WG Tunnel. Btw Wireguard is on the IzzyOnDroid Repo.

I usually put all the relevant travel data in my Joplin notebook. If the tickets are availible as .passkey files I manage them with PassAndroid. Transportr for public transportation. Wireguard if you need to access your home network via VPN.

Using Argon NEO and quite like it. In my case it was important to have the ability to use a HAT (HiFiBerry).