As many others here have said and recommend, Phantom is the most popular of the Solana wallets.

Personally, I am more partial to Solflare myself, it’s the second most popular (you can’t go wrong with either one, really) but I recommend it to newbies as it not only has the extension version of the wallet for all browsers, but also mobile and even a web version, for those who want that.

Both of these will let you use Raydium, and both also have a built-in swap feature you can use as well, though be aware you’re going to be paying (marginally) more in fees than you would be using Raydium directly or, by the best route, using an aggregator like Jupiter.