Try to memorise common tile spawns and types of tiles. If you have to chase in an unfavorable tile, make sure you brute force value out of your time, don't give up after 20 seconds without getting a hit or a pallet. Commit or don't chase at all.

Long wall jungle gyms, regular jungle gyms and killer shack are a dogshit tile for most killers. These tiles can only be played effectively as killers with powerful anti loop, or a wonderful 50/50 mind game.

Run Zanshin Tactics to get a feel for generic map layouts, and to plan your routes and where to corral survivors in chase.

Main buildings are usually unfairly strong vs most killers.

Break pallets on the edge of the map facing outwards so the survivor has less time to run elsewhere.

You will lose. A lot. Sometimes winning doesn't feel good either. But you keep learning.

Leave harder killers for when you get the basics down.