How to load pre trained agent model and simulation by using it?

I wanna do simulation by using pre trainned model(agnet).

How should I do ? And Is there a way to check if I can use the trained model (display of training manager, etc.)?

Is it possible to extract observation data from the model?

agentOptions = rlSACAgentOptions;
agentOptions.SampleTime = Ts;
agentOptions.DiscountFactor = 0.5;                       
agentOptions.TargetSmoothFactor = 1e-3;                   
agentOptions.ExperienceBufferLength = 1e6;                 
agentOptions.MiniBatchSize = 1024;                        
agentOptions.EntropyWeightOptions.TargetEntropy = -1;     
agent = rlSACAgent(actor,[critic1 critic2],agentOptions); % What should i do here
 
 

maxepisodes = 15000;                              
maxsteps = 1e6;                                  
trainingOptions = rlTrainingOptions(...
    'MaxEpisodes',maxepisodes,...
    'MaxStepsPerEpisode',maxsteps,...
    'StopOnError','on',...
    'Verbose',true,...
    'Plots','training-progress',...
    'StopTrainingCriteria','AverageReward',...
    'StopTrainingValue',Inf,...
    'ScoreAveragingWindowLength',10); 
%% is this correct way?
load("K35_cal2_joint1_60.mat","agent")
agent = agent;
 
trainingStats = train(agent,env,trainingOptions);