PS5 being blocked?

Ever since getting this Internet I've had persistent issues playing a game, constantly lagging and ping spikes on it making it unplayable. A few days ago this started happening on another game too, it lags me out the game I'm in and the Playstation Party too and always gives me the same error code, those error codes say it's a network configuration issue or something. I was also told that during my lag spikes my firewall was blocking upward of 1000 things it viewed as hostile and that it may view my PS5s connection as hostile, how do I fix this?