The podcasts and other media consumption will probably be what most benefit you in the long term, and something like Anki and Duolingo I think are good complements for that.
Any alternatives to Duolingo that I think would be worth replacing it, would have to be something that is more focused on the specific language that you are learning, i.e. Nicos Weg for German (and I don't personally know any for Italian, sorry). Most other general language learning websites/apps would probably be running into the same issues and limitations as Duo, and which one to use depends most on personal preference; however, there is one I've heard of called Italki (there may be more) which basically acts as a language exchange app, where you connect talk to people who natively speak the language you are learning, and they can give you input. I've never tried it, but I've heard good things.
Other than that, you have certified online/in person courses, but obviously those are not as convenient as Duo, and they cost money (probably significantly more than even a Duo subscription).
EDIT: Oh, I forgot to mention, but one thing which I personally enjoy is looking up and trying to read children's books; and I mean like "90% picture & 10% text" books which are made for parents to read to their very young kids. And as you get more comfortable, try finding and reading increasingly harder books/stories online.
Firstly, the first and only rule of the instance you are commenting on is "be nice", but you couldn't even do that for one comment. Why are you even here? It's like going to a place whose sole purpose is having somewhere where there isn't rubbish on the floor, and throwing something on the ground as soon as you set foot in the area.
Secondly,
This situation and WW2 are not remotely the same thing. And no historian would call what the allies did to the Germans "genocide", because it wasn't. What Israel is doing has been. And it will be remembered as such. Just some differences:
They don't hold even remotely the same kind of power and influence over the people in their region. The Nazis were given power through legal elections, Hamas was not. And Hamas is only in control in Gaza, not in the West Bank, where Palestinians still suffer at the hands of Israel.
The existence of Hamas is a direct consequence of what Israel has been doing for several decades; this conflict did not just start last year. There was not an ongoing genocide of Germans before WW2, and it's not how the Nazis came about.
WW2 was a war being fought between mainly armed soldiers, and people do not defend or support the bombing and killing of civilian targets, nor were they the primary targets. Israel has bombed and killed Palestinians indiscriminately, and that is what you are defending.