Don't be too fast to quit your relationship because you see some bad behaviours in your partner; the truth is we all are humans.
No human is perfect and there is no human being that does not have one or two commas.

If you keep on searching for a perfect person to marry, then you will keep searching forever and end up not getting married; this is because perfect person does not exist; person that has all the qualities you want does not exist.
All you need to do is to correct your partner.

When you observe some characters you don't like in your partner, do not quit the relationship instantly, rather, correct him or her; counsel him or her.

Do not expect your partner to change immediately after you corrected him or her. Give him or her some time to change gradually; change is a slow process. Be patient.
This is mistake many people make, When they notice an ugly behaviour in their partner, they quit the relationship.

It is very wrong. It doesn't show maturity. Mature people don't quit relationships like that; they give their partners time to change gradually and then tolerate each other but listen be patient for him or her to change if you notice they really want to change.

Please I want you to understand something "you can't change your lover, if your lover doesn't want to change" so be careful when being patient and waiting for who doesn't want to change to change.
You can't change him or her if he/she doesn't want to change, only them can change themselves.

I didn't said you should go and die in bad relationship, remember " you can't change your lover, if your lover doesn't want to change" some relationship need letting go especially in dating.
Not waiting and loving a fool who keep cheating to change whereby he or she doesn't want to change.

Sometimes some people can't change that's the fact unless they want to change.
(Marriage can't even change them) Don't believe in marriage they will change, it doesn't happen, you can't expect your partner to change overnight because....
https://allsinglesandmarried..com/2019/10/15-signs-that-shows-girl-is-really-in.html?m=1

I'm happy in my immaturity

You came here and dropped this negative bomb and you think we will follow you to hell to read some more

This is nonsense.

I'm all for not being quick to judge, but some things are dealbreakers.