Why can't I find a 2.2ohm 0.25W 10% resistor
The 0.25W is the wattage that the resistor should be able to withstand. E.g. it can do 10mA (Milliampere) at 25V (Volts) because 0,25W = 10mA * 25V (from P = U * I).
Generally: More wattage is better.
The 10% is the maximum the tolerance that is allowed. E.g. that allowes for resistors that are labeld &quot;1kΩ&quot; to be between 900Ω and 1100Ω. So a 1kΩ resistor with 5% tolerance (or even less tolerance) will be well within specs.
Generally: Less tolerance is better
Conclusion: You can use any 2.2Ω / 10Ω / 1kΩ resistor with at least 0.25W and a maximum of 10%.
Adittionally you should look out for the formfactor of the resistor. SMD or THT? How big (as in &quot;5mm long&quot;)? You need to know these values if you want to solder it to a pcb.