Phone not charging after changing battery

I have a old lg Stylo 4 I don't know how old but old it doesn't like to charge I have changed the charging port and it worked for month or 2 then stopped and Sense it's old I thought the battery(I couldn't find a lg battery online)was too old it never been replaced so I replaced it and after a little over a week it stopped charging I have used like 6 different chargers and bases I charges for a second then stops I can't take in cuz how old it is, the fingerprint sensor stopped working when I replaced the port too.