There is quite a bit of new tech in the mk4 Octavia compared to previous models - and it can take a while to get used to it. My best advice is to be patient, take some time to go through all the menus in the infotainment system and configure it best you can referring to the manual for things that are not obvious (as was the case for me, switching from a Mk2 Superb to the Mk4 Octavia SEL FE). Once set up to your liking it's dead easy to use.
The Lane control can be tedious, irritating, down right annoying, or a useful safety feature. All opinions are valid and rehearsed many a time in this forum over the four years of so of the Mk4 (There many strong opinions expressed over the years!). Personally, I rarely get wound up by it nowadays as I have learnt to know the types of scenario it will try to do what it's programmed to do yet - as an example, when a single lane becomes two lanes mine tries to keep me central between the white lines whilst I'm choosing to take one of the two lanes ahead well before the central line appears. Yes, another thing to anticipate but soon get used to it. I have turned off the steering wheel vibration (which stays off thankfully).
As for the Infotainment being a distraction, that lessens with familiarity. If your car has voice control then start using it, so much easier for radio, music, temperature control. Similarly with CarPlay or AndroidAuto - the voice control is a big help.