t the plaintiff's request only by court order, on terms that the court considers proper." Fed. R. Civ. P. 41(a) (2); see also Paysys Int'l, Inc. v. Atos IT Servs. Ltd., 901 F.3d 105, 108 (2d Cir. 2018).1 "Rule 41(a)(2) dismissals are at the district court's discretion and only will be reviewed for an abuse o