It was a pain in the neck for a long time to be able to remove the supports from the actual print for me. I use an Anycubic kobra 3 combo. In this case the simplest way is to use PETG fillament as a support. It increases the printing time substantially but it is perfect. The PETG and PLA does not adhere to eachother so you can set the spacing for the top layer to 0 and get a perfect shiny smooth layer on your actual PLA print. The only important point that you must keep in mind is to increase the purge value on your printer to get rid of the PETG support material from the PLA otherwise the print will be really brittle. The other solution if you do not have a possibility to use multimaterial for your prints is to use a normal cheap hairdryer and try to loosen the supports from the actual print and increase the top distance in support section by 0,04 mm. It makes it easier to remove but unfortunately I could not achieve a very nice charming base like the one I get from PETG/PLA combination.