Getting a pretty large settlement and considering dumping 30-50k on BTC what app should I use to invest?.

I got a settlement coming in that should be around 200k. I’m trying to set myself and my family up long term, and I don’t mind putting a chunk of it into Bitcoin to just hold for years.

I’m thinking of dropping 30–50k into BTC, money I’m fine with leaving invested. I know the move after buying is to pull it off the app and into a hardware wallet, but what’s the best app to actually use for a buy like this? Coinbase, Kraken, Cash App, something else?

Anyone here who’s bought bigger amounts before — what’s the smoothest and safest way to do it?