High ping and slow internet

[GHDH]

Hello,
I have really bad internet connection and high ping in gaming since I moved to new apartment, I had DSL 16 before without any issues . Vodafone offered cable internet so I took  Cable 200 offer and the internet since then has been really terrible.
From about 16:00 H to 24:00 from Monday to Frieday , 12:00 to 24:00 on Saturday or Sunday ping spikes , slow internet even going off and not having internet for sometime and that happens everyday since I got cable.
Somedays even at 8 9 in the morning I have same issues.
I use internet thru lan and I have tested it while connected to the PC and its the same issue.
Website like twitch and netflix keeps loading and freezing , in games Leauge of legends and CS GO I have ping from 180-300 constantly ( Included picture from game and pingplotter to the server).
It's hasn't been an enjoyable experience. I factory restarted the router couple times tried everything but the issue remains. I included pings to google.de and heise.de and pingplotter to EU league of legends server.
And lastley to mention that I can't even connect to Whatsapp or Facebook messenger calls it just goes out every 30 secs.
Thanks

[GHDH]

Here is ping to google.de and Heise.de

[GHDH]

And this is speedtest ( Sorry for posting more times but the internet is really slow and the pictures aren't loading)
https://imgur.com/KgrKW0l (this is ingame ping)

[Moni_GK]

Hello GHDH,

I'd be happy to check the connection. Please send me a PM with your customer data (name, address, customer number and date of birth).

Please contact me again here after you have sent me the data.

Kind regards

Moni

[GHDH]

I sent you the info per PM.
Thanks

[Martin59]

Hello, GHDH,

the customer number is still from your DSL connection. Can you please check again if you have a different customer number?

Best regards Martin

[GHDH]

Hello,
Sorry I got it from an old post , I sent the information again.
Thanks

[Martin59]

Hi GHDH,

no Problem.

I would like to send you a technician to check the line on site.

Can you please send me a PN with your mobile phone number again.

Please contact me again here after you have sent me the data.

Best regards, Martin

[GHDH]

Hello Martin,
I have sent you my number with the times that I'm free so you can contact me.
Best wishes.

[Wallace]

Hi,

Before I send the technician to you, I wanted to ask again if the problems only exist in the evening?

Regards

Wallace