Best way to buy SMALL AMOUNTS to COLD WALLET

Hi.

I want to buy sats for cold storage, but I am getting fed up with these exchanges charging not only a fee or an internal rate, but also some random withdrawal fee.

All I want is to buy BTC, maybe once every other day, using my fiat from my calary. Never large enough sums for the brokers "premium rates" of larger monthly volumes.

I am from the EU, so I cant use Bitcoin well, which I feel like is just what I am looking for sadly. How do yall buy for your cold wallets? I have a Trezor, and they have integrated an easy way to buy, but all those brokers (Revolut, Topper etc.) have internal rates so I am not getting market rate. Is that an impossible ask?

Is there a P2P service in the EU that can facilitate my wish?

Thanks for any input. <3

Image for attention, but this is the Trezor suite andwith the integrated buying feature- is the ease of use worth the lil extra cost of their internal rates?