Thats exactly why I always spend the 1st night in a hotel very near Suvarnabhumi which offers free transport to and from the airport. U just go to the area on Arrivals Level 2 between gates 3 and 4 and ask for the transport for your hotel. Totally stress free, wait a short while and about 10 mins drive to your hotel. I can recommend B.S Residence or Thong Ta Resort or The Great Residence. All on Agoda.com.
Their service used to be dreadful after Hull closed but everything seemed to change with Covid and I must say I have found their service excellent. Not needed them in the last 3 years as I have a Retirement visa so not sure how things are now. I did wonder whether the positive change was due to a change in Ambassador.