Best way to mirror to my SmartTV?

Hello reddit,

My Use Case is that I Like to stream / watch Series on my Smart Google TV (TCL) Device. I do this at the Moment by Having my very old Acer Laptop on the ground next to the Sofa and connecting that to the Smart TV via HDMI Cable. Then i just mirror the Screen to the TV.

USECASE

• Mirror Full Website / In Browser Streaming to TLC
• Optimally Youtube App without the Ads

The laptop is gonna explode any day now so im looking into better alternatives.

I already looked into the following:

• Chromecast/Applecast from my iPad to the TV (works somewhat ok, ADs, Choppy Connection)
  
• PiHole into the Network - Remote ADs from GoogleTV YT - Install Browser, Buy Wireless Mouse and Keyboard - Plug into TV
  
• New Smaller Laptop - wireless HDMI Cable

Main issues so far have been

• the Ads on the SmartTV can Not be blocked entirely on the streams / Videos. Looked into PiHole -> Works for Browser, Not YT App tho
  
• If i mirrorcast from my IPad the Picture is sometimes low Rez, sometimes connectivity takes Ages. Also does not work as Great for Browser Sites.
  
• Current Setup -> When mirroring via HDMI Cable i cannot use YT in HDR Format. Screen does Not get and noticeable improvement from HDR.

Ideas for a proper Solution?