In terms of Accountability and Usage of Voting, how well does FPTP do? (EX)

-FPTP will make Accountability clear to the Electors of the MP. Eg Several MPs that represented Constituencies that wanted to Leave the EU had Lost their Seats on 2019 Election as they Campaigned [MPs] for a Second Referendum [Anna Soubry & Broxtowe] -But FPTP will mean Votes are just Wasted in Safe Seats as the Outcome won't Change. Lots of Seats are the Party Heartland, meaning there is Little change. Electoral Desserts are also Formed when little Party Competition occurs [South West Region of England = Conservative, North East England = Labour]