Because of Covid and other issues I have not been back to the UK in over 2 yrs.

I am finally able to come over in April and want to attend the Hartlepool game. Because most games are now a sell out what options do I have to buy a ticket please? My parents live less than a mile from the ground, I used to wander up at 2.45 pm and grab a ticket, I guess those days are gone! Any advise would be appreciated.