Which app has the lowest fees for purchasing and sending BTC?

Hello, I have previously used Cash App, but after paying 1k in fees I’d like to find a better app.

I have also used Coinbase but no longer have access to my account.

I’ve used Binance but $50 for sending $1k seemed pretty steep even compared to Cash App.

I currently have Robinhood downloaded but haven’t used it to send BTC.

I’ve downloaded Strike but am waiting to be able to send/deposit funds, and am curious if it takes 7 days every time or just initially.

Googling which app uses the lowest fees pulls up AI attempting to cross-reference but more so promoting each app side by side for its extra fancy features and functions, which I don’t care about. I’ve heard about Kraken but apparently Kraken Pro offers lower fees, while recommending the basic one for beginners (seems counter-intuitive)

I simply want to know; which app uses

The lowest fees for purchasing BTC

The lowest fees for sending BTC to external wallet For example, if I want to buy and send $2000 or less in BTC to an external wallet – which app will have the lowest fees total?

If that means first buying USDC on the app and then buying BTC with it that’s fine, but I just want the lowest fees possible.

Thank you!