Heat is the biggest enemy of electronics, particularly high heat generating chips on a board. These areas would notably be the SoC (cpu and gpu chip), ram, and voltage regulators.
AVR receivers require regular cleaning also, as the amplifier components (mosfets, other capacitors, regulators) need efficient passive cooling.
I normally suction out any dust I can once or twice a week with a vac and brush tool from the vents. Once every 2 months, I blow them out completely with my air compressor. I time doing this when I also blow out my household PCs.
This is good sound advice @Boligee suggests for those that don’t do this with their devices. Dust build up acts as an insulator on heatsinks and chips on the board. At the very least, you can used compressed aerosol dusters to get some of the dust out regularly.