Best wallet for simple occasional purchases of BTC?

Hey y'all, I'm a newbie to crypto. I had a wallet with Celcius years ago, and lost everything when they froze all accounts and filed for bankruptcy. I attempted to recover it all in the class action suit, but never recieved what I was owed despite contacting them relentlessly.

Basically, I want to make some BTC purchases here and there as an investment. Nothing crazy, I just want somewhere SECURE to hold some crypto. I feel so burned and traumatized from my experience with Celsius, so longevity is really important to me here.

Should I just be using PayPal or something?

Thanks so much in advance!