Never use debit online if at all possible. Debit does not offer the protections of a credit card.
PayPal is extremely useful online but it is not accepted everywhere (I'm looking at you, Amazon). It gives you a layer of separation between you and who you are dealing with, as well as offers some extra protections for both parties.
CM Mastercase H500 / Corsair RM650 Modular / AMD Ryzen 5 3600X / SilverStone PF240 AiO Cooler
AsRock X570 Extreme4 WiFi AX / 4x8GB XPG Specrix RGB 3200MHz / Zotac GTX 1660 6GB AMP
Samsung 970 EVO 250GB M.2 / Samsung 860 EVO 500GB / WD Black 750GB / WD Blue 2TB
Win10 Pro x64 / Razer Mamaba Wireless / Tecware 87 Key Mechanical
3xSceptre E255B-1658A 24.5" 165Hz + NEC MultiSync LCD1970GX 19" (in 3+1 configuration)
R.I.P. Father Trotter ... 14 Nov 1945 - 4 Sept 2009