Looking for a training plan
It depends whether you are asking about coaching or simply getting/following a plan.
Plans are widely available and can help you simply by having a structure and routine to work to but are obviously not specific to you.
If you mean coaching you are talking about something very different - a plan that is tailored to you and to your development towards your goal.
Whichever way you decide to go, don´t expect instant results, reaching your potential in any aerobic sport is not a quick process - you should see results in your first season but to truly see what you can do it takes at least 2, and often 3-4 years of consistent (week after week of training without having the need to break this with recovery weeks, or longer) training - and this can, and should be done at low intensity.
Hope that helps, and this may help put your training into perspective: https://mastersoftri.com/triathlon-effort-pyramid/