i'm always worried that each time it could be the last time i get to log in haha.
This did happen to me 2 times with the 4 accounts that I've purchased from that dude. Once it was my fault (I broke the rules that he's given me, so I got my account disabled but the seller replaced it with a different account), but the 2nd time it wasn't my fault, so I lost the $10 that I paid for 14 days of usage... Personally, I didn't mind as I was using these accounts for minimum stuff (basic keyword research and backlinks analysis, I didn't even touch 80-90% of the stuff that Semrush offers), but I can see how it will be a problem for someone who needs all of the bells and whistles that come with Semrush.
I'm now thinking about buying Wincher, it's just 10 dollars a month with the Cyber Monday sale, so why not give it a try.
never heard of it, but if it's only $10 / month that's indeed a good deal. The question is, how much it will help as - from what I understand - you need to do research on Italian markets, and I've personally not found a single SEO tool that works with that geolocation.
But the last time I've researched SEO tools has been like 5-6 years ago so, I don't know, maybe things have changed in the meantime...
I would say, contact Wincher support and ask them about the Italian stuff, if they don't have it then I don't see reason to use them.
Anyway, before committing to one of these things, I would say research (and even contact) each one of these tools, maybe they're better than Wincher (or even Keysearch / Semrush), you never know
SEO Power Suite... this is one of the least mentioned (but which is still good) SEO suites that I've heard of (and even used, albeit over 10 years ago, but even then they've been pretty good, I assume that nowadays they're even better) but which can be considered a decent alternative to Ahrefs, Semrush, etc...
Jaaxy... I used to use these guys for my SEO research some 7-8 years ago when I was part of the
Wealth Affiliate membership site, and Jaaxy was integrated into WA's system, so I got to use Jaaxy a lot during my time with WA, and I got to like it eventually, even if - back then - I didn't have access to all of Jaaxy's features, I think we were getting the middle plan or something, because I remember that we were using a paid plan, but not the highest paying one...
Besides, if they've not removed the free plan, you can join for free and test drive their keyword research for free to see if it meets your needs, and then you can upgrade or drop it. Since it's free, you won't be losing anything
Mangools... another tool that gets decent recommendations, and which I remember to have used in the past (when I was using group buys and paid like $2-3 for access to Mangools) and it was pretty good. Of course, it's still not as good as Ahrefs and Semrush, so don't expect to get Ahrefs-level of data with Mangools (or with any other tool), but it's a decent option (and cheaper too I would guess)
Keywords Everywhere... this used to be one of the cheapest (albeit most basic too) keyword research tools some years ago, but I noticed that they've increased the prices considerably. But probably that they've added more features too, which could justify the new price. Just give them a try (see if they have free trial), or take them up on their BF / CM offers if they still have these...
Answerthepublic... personally, I've never liked this tool, but that was like 10 years ago when I tried it. I can see that a lot has changed with them in the meantime, so I might try them again in the future (if I can be bothered to go back to doing SEO that is

)... Anyway, check them out, maybe you'll like their prices / features...
With a bit of googling I could probably list few more popular SEO tools, but I wanted to mentioned only the stuff that I've used, so I'll leave it to you to google for more options.
But honestly, since many of these tools are still offering BF discounts I would say contact them ASAP and ask them about serving Italian markets and any other questions that you might have, and then jump in while their discounts last