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Nowadays with Google I would just consider most if not all of those bad links non-existent. In other words Google is ignoring links more than "punishing" you now. You may have ranked temporarily until Google caught up and then just stopped counting the bad links. However, IF you get a manual action notice in search console, then the site IS being "punished" and you need to get that removed. If you do not get a manual action notice, I would just make pretend you're starting from scratch, and you have to build your authority from the start. because of this, there's no time period to wait until it's "fixed" - you most likely will not just recover back to ranking where you were, because the site didn't belong there in the first place. In general, also, I would focus a lot of your SEO efforts not just on links, but lots of other things like great design, great content, building a known company, getting early traffic with paid channels, doing CRO, creating great UX etc.

You can try to copy your competitors linked domains using backlink analyzer tools like the one Moz has: https://analytics.moz.com/pro/link-explorer/home Good luck!

Hello Alexander! What a cool business you have! And barn doors have definitely become the "in" thing. I'm looking at your website right now. I'm going to recommend that you hire a very good SEO company to do a one-time audit for you, Alexander. If two years of effort have not resulted in you seeing the rankings you believe you deserve and know you need, then you are almost certainly falling behind in your profit goals. While I can't match here in the forum what a real audit could do for you, I want to give you a couple of first impressions in case they are of help. Your products are really beautiful, but I see some things I'm not liking on your website, including: The moving masthead, that when clicked on, makes your branding disappear and shows wood. This is likely slowing down your site speed, and doing anything that makes branding disappear alarms me. Never choose fancy features over usability. Never. The feature that shows numbers loading between page clicks. I'm not sure if the idea there was to make things look fast, but, in fact, it's just drawing my attention to the fact that I'm having to wait for something to load ... even if I don't have to wait long, I feel like I'm waiting. Lack of text on your homepage. It's a common mistake of visually-oriented businesses to think they shouldn't have text on their homepage. I know that minimalism can be appealing, but it's also giving you almost nothing to tell search engines or people, and nothing to optimize. The product descriptions on your website show that you're taking time to be thorough, but I recommend some polishing here. I think it's awesome that the site is selling "German quality", but if the text is in English, the English needs to be error-free to ensure it's meeting Google's quality guidelines. The navigation may not be ideally usable. I don't know how I did it, but I got onto a page somehow that I couldn't get back to the main site from. It was a dead-end. I'm also finding the font color of the horizontal menu a bit hard to read. I didn't notice it at first. So, this is a start. A real audit will look at everything, but at a glance, I'm seeing some areas in which you could improve. Wishing you so much luck with your business. I really like your inventory!