You’ve got 2 redirects going on - that’s a problem, but easily solved.
https://handycrash24.de/ - this is your cannonical/primary domain.
Then you seem to be on http1 instead of http2, which is much faster. It is possibly your settings need adjusting. Your hosting provider might be able to help or just Google it for your CMS type, WordPress or whatever.
They should redirect, because not everyone will type the right URL, but they should both redirect to your cannonical/primary domain rather than in a chain. So one hop, not two.
Another thing is you need to sign up to Cloudflare for a free account and use their CDN. It’s great for security and speed. You really don’t need to pay for a CDN. Trust me.
If you need any more help just ask - these forums seem super quiet. Asked a question myself, didn’t even get an answer.