i had the hope that i dont need to run a hidden service, just to run TOR and Bitcoin at the same time
If you want to make your node accessable through the tor network, you'll have to run a hidden service.
That's a requirement of the network topology of the Tor network.
Is there a specific reason you want to achieve this ? Is it only because of privacy reasons ?
With a fullnode on the clearnet, you are protecting your privacy way better than using any lightweight client.
A core node is relaying hundreds of transactions per minute. If you are going to broadcast a transaction, it is just one between thousands being relayed from your node to others.
An SPV client, on the other hand, does only send transactions sent by the user which makes it trivial to assign transactions to IP addresses.
So, as long you are not doing massive amounts of money through illegal activities, a simple full node should be enough to protect your privacy.
Feel free to reply with your conerns. I believe there is a way to protect your privacy without running a core node via Tor AND clearnet.